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Health & Beauty > Health Care > Supports & Braces 11-14XX-X in_stock 549.99

DonJoy Armor FourcePoint Protective Knee Brace

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DonJoy Armor Knee Brace with FourcePoint Hinge

The strongest and most supportive off-the-shelf knee brace for contact sports with added ACL support via the FourcePoint Hinge.

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Combines the BEST off-the-shelf knee brace in orthopedic history with FourcePoint Hinge Technology.

The DonJoy Armor knee brace with FourcePoint Hinge Technology is the brace to use if you are an extremely active individual or athlete who suffers from an ACL or MCL instability or injury. Offering the same features as the standard Armor brace, this model is equipped with FourcePoint hinge technology – clinically proven to provide additional ACL protection by reducing the time spent near full extension (otherwise known as the “at risk” position). The hinge enhances DonJoy's 4-Points-of-Leverage System by dampening knee extension, and reducing shear forces at the knee.

The Armor brace is the strongest and most supportive brace you can get without a prescription. If you are concerned about protecting your ACL during sports or high impact activities, the Armor knee brace with FourcePoint Hinge Technology is the best brace for your needs. Our low profile hinge combined with our internally mounted straps promote bilateral use that won't impede performance. The steel reinforced hinge plate and enhanced aluminium frame deliver uncompromised strength and proven protection. There are numerous publications to support the 4-Points-of-Leverage FourcePoint hinge.

This brace is suited for any active individuals with ligament instabilities and athletes involved in extreme or contact sports brace like football, skiing, snowboarding, motorcross, surfing, wakeboarding, and more.

The DonJoy Armor knee brace is used to treat or prevent the following injuries:

  • Moderate to severe ACL instabilities (Note: this product is NOT recommended for PCL injuries or instabilities)
  • Recovery from ACL reconstructions
  • MCL or LCL instabilities
  • Hyperextension prevention

Product Features and Benefits

  • Four-Points of Leverage Dynamic System
    This patented technology was developed to reduce the strain on the ACL by distributing the load placed on the ligament via four points. Click here to learn how the Four-Points of Leverage works.
  • FourcePoint Hinge Technology
    Makes you less likely to suffer from an ACL injury because it reduces the amount of time your knee is in an “at risk position”, enhances the Four-Points of Leverage by increasing the posterior load applied by the brace on the tibia, and improves your natural gait by applying progressive resistance before reaching a firm end point during movement.
  • Adjustable Extension Resistance
    The FourcePoint Hinge enables you to set the flexion angles (25˚, 35˚ (factory setting), 45˚, 55˚, or 65˚) based on your condition or point of recovery. This puts you in control where the degree of tension stops.
  • Available in Standard and Short Calf lengths
    Now you can choose the calf length to further customize the fit of your knee brace. The short calf length is recommend if you will be wearing ski boots or similar items at the same time as your knee brace.
  • Custom Frame and Swiveling Strap Tabs
    Get a perfect fit by molding the brace to your knee, as well as enhance the fit and suspension of the brace with the swiveling strap tabs.
  • Aircraft Aluminium Frame
    You get the benefits of a lightweight and low profile knee brace that is also stronger, thicker, and more stable than the other lightweight knee braces on the market.
  • Anti-migration Supra Condyle Pad
    Your knee brace will stay in place no matter how active you are.
  • Calf Pinch Guard
    Provides a smooth transition between boot and calf cuff so you’ll never pinch your calf again. This is an add-on accessory that is purchased separately.
  • Impact Guard
    Protects the shin and knee against blunt blows, as well as prevents you from ripping pants or uniforms. This is an add-on accessory that is purchased separately.

Sizing and Measurements

Click on the Size Chart tab above to learn how to measure your leg to determine what brace size you need.

Instructions for Use…how to put on your DonJoy Armor Knee Brace.

To ensure you are properly applying your brace, click on the Video tab above and watch our Fitting Video.

Shop our complete selection of knee support or browse additional DonJoy products.

Take the measurement of your thigh and calf 6" above and below your kneecap using a flexible type tape measure.  Use the circumference you measure here to choose your size.

    Size Thigh Knee Center Calf
    XS 13" - 15.5" (33-39 cm) 12"-13" (30-33 cm) 10"-12" (25-30 cm)
    S 15.5" - 18 .5" (39-47 cm) 13"-14" (33-35 cm) 12"-14" (30-35 cm)
    M 18.5" - 21" (47-53 cm) 14"-15" (35-38 cm) 14"-16" (35-40 cm)
    L 21" - 23.5" (53-60 cm) 15"-17" (38-43 cm) 16"-18" (40-45 cm)
    XL 23.5" - 26.5" (60-67 cm) 17"-19" (43-48 cm) 18"-20" (45-50 cm)
    XXL 26.5" - 29.5" (67-75 cm) 19"-21" (48-53 cm) 20"-22" (50-55 cm)
    XXXL 29.5" - 32" (75-83 cm) 21"-23" (53-58 cm) 22"-24" (55-60 cm)

    Center Knee 1.Stand with your legs shoulder-width apart, legs slightly bent and leg muscles contracted.
    6 in Above 2. Measure up six inches from the center of your knee with a tape measure, as shown.
    Thig Circle 3. Measure the circumference of your thigh at the 6-inch mark, as shown.
    6 in below 4. Measure down six inches from the center of your knee with a tape measure, as shown. Then measure the circumference of your calf at the 6-inch mark.


4.8 12

DonJoy Armor Knee Brace with FourcePoint Hinge reviews

My trainer recommended I wear this brace during football practice so I don't injure my ACL. I've taken a couple bad hits, but I haven't injured my knee and I think it's because of this brace. - Jason
I chose this brace after I hyper extended my knee at work. It is a very comfortable and functional brace. I sometimes can't even tell I'm wearing it. Great Knee Brace! - Frank
The King of Court
I just received my Donjoy Armour knee brace yesterday. I had ACL replacement on aug 18th. I've rehabbed hard and I started playing non competitive basketball in early December with over the counter knee braces. (I thought I was far behind schedule to playing again.) When I played ball last night with the Armour it was just like getting a new knee. The support was great and I was back to doing old moves again. Good Luck to all. - The King of Court
I'm a professional basketball player and I've just recovered from a ACL strain in my left knee. This brace is amazing. I feel great on the court. And I feel like my old self. - NBA_BOUND
Rockclimber girl
I've had this brace for about three months now after tearing my ACL playing basketball, and having surgery. This brace is so lightweight and comfortable that I sometimes forget I have it on. With it, I was able to complete a half marathon and get back to rock climbing, basketball, and snowboarding. I actually took a really bad fall snowboarding this year and was worried about if I reinjured myself, and the pain I was going to feel the next day, but it never came. This brace made sure my knee was never in a compromised position during my fall so I didn't get reinjured. With this brace I feel confident that I will get back to the way I was before I tore my ACL. - Rockclimber girl
I used this brace after recovering from ACL surgery and found it to be a bit hefty at times, definitely wasn't the most comfortable braces I've worn. It did give me more confidence but I found myself constantly adjusting it trying to keep it from sliding down. - Kevin
I recently received my Black Belt in both Hapkido and Taekwondo. I had a previous knee injury from playing football and re injured the same knee during training. I wore over the counter knee braces but was in constant fear of further injury. I adjusted my body mechanics to avoid pivoting on my "bad leg." As my Black Belt Review Board was approaching I realized that I had to be able to go all out. My Sports Dr suggested a DonJoy brace. I was concerned with it causing limited motion. The first day I wore it I completely forgot I had it on after a few minutes into class. It was like my knee had never been injured. I have had no limits to what i am able to do and because of this product successfully completed my Black Belt testing. DonJoy will get you back in the game! Thank you- - Mike
I have been wearing this knee brace for a few weeks now. I began wearing it 6 weeks post ACL reconstruction. It is a comfortable knee brace that stays in place well. I recently wore it for a 10 hour work day and had forgotten that I had it on by the time I got home. I am wearing it for hiking and while working as a large animal veterinarian. It is definitely worth the money to protect my knee and to give me the confidence needed to work with cattle and horses. - KD
Got one (plus a patella stabilizer...$60 add-on) for my son who said...quote... . IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIINNNNNNNNNNNNNNNNNNNNNSTANT RELIEF!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Pain went from a ten when walking or any other movement to almost a zero. Also... even stand on one leg (right) without it giving way AND pain free. My stomach immediately felt better also. not feeling sick from the pain. - Toes
For a 34 year old to have a knee as bad as mine could only mean I rode BMX. An ACL injury without insurance in 2005 meant that I walked on a bad knee until 2007 when I finally had surgery. The doctor said my knee looked like a 50 year old mans knee before surgery. My doctor performed the surgery and all went well but I never regained the confidence that I had before my injury. I got less and less active as the years went by and my knee got weaker and weaker. I didn't have much hope for being active again and arthritis started setting in hard. Then I decided to order a DonJoy knee brace and everything changed. The moment I put it on for the first time I felt like I had never been injured. I could jump, and run, and ride my bike again. Almost ten years of not riding a bike, something that was a huge part of my life, I am back on my bike. I can't begin to explain how much better I feel. I exercise again and I am not in pain. Heck I can walk without being in pain, that is amazing to me. I would highly recommend this knee brace to anyone with a knee injury. It is comfortable and very supportive. I wear it all day without issue. It fits under my pants and is barely noticeable. Do yourself a favor and get the best. I am a believer now. - Brian
After three knee surgery's in a year and a half which included 2-ACL, 1-MCL, MICO-FRACTION (Femur) and a sown down MCL and other cleaning, this brace has been a savior. The Knee Brace has kept me from a third ACL replacement(Stretched) and has given me the stability to walk, bike and general movement without pain. Andy - Andy
After 4 Months of rehab from an ACL reconstruction, my Dr. finally wrote a script for a brace, I was hesitant at first about this brace but I felt instant relief the first time I put it on. I can walk and run without pain and finally get back to my old active lifestyle. - Jake

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Questions on DonJoy Armor Knee Brace with FourcePoint Hinge

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  • From Maeve at 3/21/2015 2:53 PM
    • I have recently sprained my MCL and need to continue playing the rest of my lacrosse season. I also suffer from knee hyperextension and patella tracking issues. Would the Armour brace be a good fit so that I can reduce pain and keep playing?
    • Maeve
      The Don Joy Armor Knee Brace with the Fourcepoint hinge would be the appropriate brace for you to wear to finish the season. The hinged brace will give the protectioin for the MCl, the fourcepoint hinge will help with the knee hyperextension and you will need to also purchase the Tru-Pull attachement and use this as well to keep the patella tracking normally.
      The Tru-Pull Attachemtn can be purchased form DJo direct by calling 800-336-6569
  • From Jessica at 1/23/2015 10:18 PM
    • I was wondering if this would be a good knee brace for my situation. I have currently had a total of 3 arthroscopy surgeries on my Left knee. All 3 involved a meniscus tear and then 2 of them were ACL tears. My last knee surgery was in 2010 but I am starting to experience some pain and I am currently getting ready to deploy (I'm in the military). Would this knee brace work for me? Thanks you for your time!
    • Jessica
      The Armor with fourcepoint knee brace would be an appropriate brace for you to wear, how ever I would like to suggest the Full Force Ligament knee brace because it is a little lighter in wieght. Since you will need a low profile brace to wear under your uniform this brace is an excellent choice. It has our fourcepoint hinge and four points of leverage strapping system to give you the support for your knee, but it is light weight compared to the Armor.
  • From John at 1/11/2015 8:05 AM
    • My son tore only his ACL and has need surgery. He is 15 years old and plays QB, acl tear was on his front throwing leg (right handed QB.) I read the article where the Vanderbilt QBs were wearing your brace, the shorter one. Which one is the shorter one and which one are the QBs there wearing? My son is expecting to return to action in August and I would feel a bit more comfortable letting him with a brace.

      Thank you
    • John
      Most likley they are wearing our Custom Defiance knee brace which would need to be ordered through one of our local Don Joy Sales Reps But if you want to get a Patient ready brace then I would suggest the Don Joy Armor with fource point hinge.
  • From bernardo at 12/18/2014 10:22 AM
    • How much does the fullForce brace weight?
    • Bernardo
      The Full Force weighs 20 oz
  • From Neo at 11/27/2014 10:25 PM
    • Hi, I'm a 6' 2 tall person who has an acl issue, consider I play soccer but sometimes I ski too, which one should I get, ski or armor? Standard calf or short calf? Thank you.
    • Neo
      In order to be able to ski in the brace you will need the short calf, and I would suggest the fourcepoint hinge. The ski version has a fourcepoint hinge but it is our old version. The newer hinge is more low profile.
  • From Justess Byrd at 11/22/2014 10:35 PM
    • I recently tore my ACL while playing basketball (about 4 months ago) but am still able to lightly run/jog but knee is unstable. Is there a chance I could continue playing with a knee brace? If so What would be the best recommended brace for me to continue playing until surgery?
    • Either the Armor with the Fource Point of or the Full Force Knee Brace The Full Force is lighter than the Armor
  • From Jose at 11/17/2014 11:06 AM
    • Hello, two month ago I tore my ACL in an Enduro Motorcycle accident. I've been doing lots of rehab therapy and the doctor says that because my good stability I might not need surgery, but if I want to keep on doing Enduro and CrossFit I need to buy a good brace. I'm looking at the Armor Fource Point or Standart hinge, which one should I choose?
    • Jose
      The Armor with the Fource Point Hinge would be the better choice for you. that hinge will help to keep your knee out of the dangerous positions that lead to more injury. the hinge has a little resistance in it to slow down knee extension. This would be better at helping to prevent further injuty to your knee
  • From Joe at 11/10/2014 2:31 PM
    • Can I purchase FourcePoint hinges and install them on my Legend Knee Brace?
    • Joe
      I am sorry the fourcepoint hinge cannot be installed on the Legend Knee brace
  • From Armando at 10/8/2014 7:39 PM
    • Could insurance cover the cost of the brace? And how many days will it take to come in
    • Armando
      Insurance could possibly cover your brace however you cannot order it from this website for insurance to be billed. In order for insurance to cover your brace you would nee to contact and order the brace from your local DJO sales representative. You can find your local rep by following this link:
  • From Andros at 9/13/2014 1:40 AM
    • Hello. I just had ACL reconsturction and medial meniscus repair. I'm wondering which braces is the most suitable for me to prevent acl and meniscus injuries? Is donjoy armour defiance suitable for me?
    • Thank you for your question. The armor would be appropriate for contact sport. If you play football, ski or do activities where there is potential collision to the brace. Otherwise the FullForce is appropriate, even for sports such as basketball and soccer. You can look at the defiance which is custom made. The defiance has a lifetime warranty on the frame and hinges, whereas the Armor and Fullforce have a 1 year warranty on frame and hinges.
  • From Mike at 8/27/2014 8:56 AM
    • If I recently tore my ACL playing football and I want to buy a brace to finish my season what would be the best brace? Also what is the difference between the DonJoy Armor Knee Brace with FourcePoint Hinge and DonJoy FullForce Ligament Knee Brace?
    • Mike
      The best brace for you would be either the DonJoy Defiance knee brace which is a custom knee brace made just for your knee it has many options available, has a lifetime warranty on the frame and hinges. This brace cannot be purchased on BetterBraces you would nee to go though one of our DJO Sales Reps to get it. To find you local DJO sales rep follow this link:
      The DonJoy Armor with Fourcepoint hinge is the Patient ready option. This brace has a strong Aluminum frame made for contact sports( the FullForce frame is not as sturdy), the fourcepoint hinge is specific for ACL protection. This brace has a one year warranty on the frame and hinges.
  • From Mark H. at 8/24/2014 10:13 AM
    • I had ACL surgery several years ago and I was thinking of the DonJoy Armor Knee Brace with FourcePoint Hinge.
      I was wondering if my insurance would cover this. (not Medicare)
    • Mark
      The Armor knee Brace is a good choice for those who had ACL reconstruction. If you would like to see if your insurance would cover this you would need a prescription from your physician and then you can contact your local DJO sales Rep to meet with him take measurements and get your insurance info. They would do a pre-auth and find out all the information and order the brace for you. To find your local DJO Sales rep follow this link
  • From Zolie C at 8/13/2014 9:32 AM
    • My son is 6 mos post op from ACLR using his pattelar tendon. He is 16, 6,1 ft, 200lbs, and plays HS football. He was prescribed a DonJoy Armor Knee Brace with FourcePoint Hinge. He is have calf pain from pressure of the lower strap and lower stiff brace arm. It is putting pressure on his sural nerve, which runs down the back of his calve. May or may have been aggravated during the surgery.

      His surgeon wants him to wear a rigid brace for the 1st year.

      Is there something that can be done with the rear lower straps on his current brace? Is the DonJoy OA Adjuster™ 3 Knee Brace more adjustable in the areas in question. Any other brace recommendations?

    • Zolie
      The issues your describing could be simply caused by a sizing issue. The Armor is a OTS brace so when measurments are taken a size that those measurments best fits into is how that is decided. The braces are meant to fit a range of sizes. Sometimes the OTS braces do not fit perfectly. Pressure on the outer calf could be the angle of the brace and again because it is an OTS brace it is pre-made for a variety of patients. I would suggest taking the brace back to your practitioner and checkg the size first. Another option is to go to a custom Defiance which would be made specifically for his knee and the fit and angle of the brace would be based on his knee shape only.
  • From Bill at 7/28/2014 1:47 PM
    • My knee 35cm thigh 45cm calf 34com. I am 165 cm tall. What size should I choose? short calf or standard?
    • Small
  • From John Garrett at 7/5/2014 6:53 AM
    • Hello i was wondering which brace would be the best for me i tore my meniscus and during the sugery they took the whole meniscus out because it would stay in place i playva wide receiver and i just want a brace that is comfortable and wont slow me down which would u recommend?
    • John
      I would reccommend the OA Full Force Knee Brace This brace is typically for arthitis but you can get it to unload the side that you had the meniscus taken out. The brace is light wieght so it won't slow you down.
  • From Vasja Zupan at 6/29/2014 2:20 PM
    • Hi,

      I need ACL brace for my left kneee - post op (15th Feb 2014) - for skiing and SUP.

      My leg measurments are:
      Calf 41 cm
      Thigh 49'5 cm
      Knee 39 cm

      My right leg (not injured) is
      Calf 40'5 cm
      Thigh 49't cm
      Knee 37

      Which size is right for me?


    • The medium should fit you
  • From Mike at 6/7/2014 3:54 PM
    • I have a DonJoy Armor brace with force point hinge for both my right and left knee, standard length, for over a year. Is it possible to send the braces back to the manufacturer to have the short calf portion replaced on these existing braces, or would I have to purchase 2 new braces with the short length. I would be willing to pay an additional amount to get these modified. I have had ACL reconstruction on both knees and the standard length seems a bit long and rides further down on my calf muscle. Thanks in advance for your help.
    • Mike
      We do not do these braces custom so you would need to order two new braces in order to get them with a short cuff.
  • From victor at 6/6/2014 10:56 AM
    • Why this armor is not recommended for PCL lesions?
    • The Armor itself is okay for PCL injuries, as you can get PCL strapping. However, the fourcePoint hinge is contraindicated for PCL injuries. The fource point hinge will give resistance during the last portion of extension, which will increase force placed on the PCL to give protection to the ACL.
  • From Dave at 5/14/2014 6:54 PM
    • I recently tore my left ACL during Taekwon-do training. I'll be undergoing surgery in a couple months, but would like to continue training before, and as soon as possible after the surgery. What brace would you recommend to minimize any further damage, and to aid in rehab (I will NOT be sparring, just forms and floor exercises/line drills)?
    • David
      You either want to get the DonJoy Armor with a FourcePoint Hinge or the Custom Defiance. Both will help before surgery to protect from further damage and you can wear them during rehab and after when returning to activities.
  • From Tae at 5/4/2014 8:26 PM
    • hey, i had my acl reconstructed two weeks ago i play soccer and i want to buy a DonJoy Armour. But the problem is I'm in Thailand, can you ship the brace to Thailand? and what is the fastest way to ship an item to Thailand?
    • To order this brace and have it shipped to thialand please contact:

      Ms. Joe Cheung

      Customer Service Executive

      Brands: Aircast, DonJoy, Dr. Comfort, ETI, ProCare

      Primary Email:

      Phone: +852.31.05.1415

      Location: Hong Kong
  • From LT #77 at 4/30/2014 5:13 AM
    • Im a high school football player and have had some knee trubpe in the past. My up comint sophmore year I will be playing varsity football and I need to protect my knees from getting injured. What knee brace will to that the best and will be able to stay intact during the games?
      -Thanks Brycen
    • If you are a lineman than the Armor with the Fourcepoint hinge is the brace for you. If you play a position that requitres speed such as reciever, and the brace will not be taking a beating every down then the Full force Ligament Knee Brace will work for you
  • From brian at 4/9/2014 12:57 AM
    • I am a police officer recovering from a tibial plateau fracture. I had two plates and multiple screws installed. After the surgery I have been having trouble with my knee / leg locking up when I walk. All ligaments are fine, no damage from the injury. I'm looking for a brace that will protect my knee and leg during fights... Side and front impact and some for padding since I do have to go to one knee.

      Any info would be greatly appreciated.
    • Brian
      The two best knee braces for your situation would be the Custom Defiance Knee brace this brace is made of carbon composite has steel hinges a lifetime warranty on the frame and hinges and is made specifically for your knee. You can get this brace with a our low profile standard hinge and one of the accessories for this brace is our impact guard that is attached to the front of the brace ans acts like a knee pad. If the Defiance is a little too expensive the next choice is the Armor Knee brace with the Standard Hinge. The Armor has an Aircraft aluminun thick frame, that will withstand the rigors of your job as well. The Armor has a one year warranty on the frame and hinges and is a patient ready brace so it fits a wide range of sizes. You can also get the impact guard for this brace as well
  • From Coach Richard at 4/3/2014 1:18 PM
    • My son tore his ACL and strained his MCL. He had ACL surgery but he is complaining about is MCL not being supported with his knee brace. He is very active in sports, especially football. What brace do you recommend to help support his MCL?
    • Richard
      The Armor Knee Brace with the fource Point hinge is the perfect brace for your son. It will protect both ligaments and privid him support to prevent any further injury. The brace is made of a tough aluminum and is made for contact sports. The FourcePoint technology along with the Strapping system will protect the knee form re-tear of ACL . The bilateral hinges will give him support of the MCL.
  • From joe at 3/5/2014 8:42 PM
    • i have a nike patella sleeve, and i was wondering if it is okay if i would wear that under the donjoy armor knee brace.
    • you can try it but I cannot guarentee that your brace will still fit the same. We do have a neoprene sleeve the go underneath our rigid knee braces. Here is the link:
  • From Mark DeStefano at 2/19/2014 3:38 PM
    • I have a torn ACL from years ago & more recently tore the meniscus in the same knee. Before the meniscus tear, I was able to ski & play volleyball (both indoor & beach) without much issue. The meniscus has left my knee too unstable to ski or play volleyball. I am contemplating surgery, but am thinking about trying the Donjoy Full Force first. Is that the right choice & will that brace fit with ski boots?

    • If you go with a short calf it will fit. However the FullForce is not recommended for ana ctivity like skiing it is not rigid enough. The Armor is the most rigid off the shelf brace on the market and would be recommended for skiing. it comes in a short calf version as well.
  • From Doug Sheppard at 1/26/2014 11:59 AM
    • I have been looking at this brace for a while as MRI's i have had indicate I have moderate to severe scarring on my MCL (Dr said that indicated numerous micro tears but never a complete rupture?) from previous hockey, skiing, and snowboarding injuries (mostly from hockey). I have delayed purchasing this brace as I have been looking for confirmation in previous questions that this will suit my purposes of daily wear to improve stability and also provide enough support when continuing those sports. My measurements are as follows:
      Thigh: 23 1/4
      Knee: 17
      Calf: 16 1/2
      Based on the above measurements I would assume a Large sized brace with short calf option would be what I am after? Would this be correct?
      Last question, do you ship to Canada?
    • Doug
      You are correct, you would need a large brace witha short thigh. We do not ship internationally. Here is the information on how to get az brace from DJO Canada


      DJO Canada


      Aircast, Chattanooga, Compex, DJO Surgical, DonJoy, Dr. Comfort, Empi, ETI, ProCare


      DJO Canada

      Primary Email:




  • From Michael at 1/20/2014 2:28 PM
    • I just recently tore my ACL and meniscus while skiing. I play Lacrosse in the spring and I have a couple months to rehab and strengthen it before the season. I would like to postpone surgery until after the season and am looking for a brace to prevent my knee from buckling when pivoting and cutting. Would this be the best brace for me?
    • Michael
      Yes the DonJoy Armor would be our best patient ready brace for protection of the ACL, although you might like the FullForce a little better because it is a little lighter than the Armor. It has the same patented technology as the armor, just a little lower profile. The best brace you can get for protection of your ACL is the Custom Defiance III Knee brace. It is made specifically for you leg and has a lifetime warranty on the hinge and frame, where as the patient ready braces only have a 1 yr warranty on the fram and hinge.
  • From Adam at 12/30/2013 3:36 AM
    • Hi, I'm considering buying your donjoy armor fourcepoint. I have a torn ACl with MCL injury. Will be having surgery in a few months and I'm looking for a brace to use while kiteboarding. My question is regarding proper sizing as I will be wearing the brace sometimes over a 4 mm wetsuite.

      My leg measurnments are
      Above knee 17 in
      Bellow knee 13.5 in
      Around knee 14.5 in

      Also, would a short calf work better with snowboarding boots? I'm 5.11.

      Thank you.
    • Adam
      Right now your measurements have you in a small for the thigh and calf but medium for the knee joint. Measure your knee again in the wet suit and you may need to go to a medium. I would suggest the short calf for snowboarding.
  • From Suzi at 12/5/2013 10:21 AM
    • Will a short brace fit me? I am 5'3, with a 27" inseam?
      I am just looking to stabilize the knee, mcl tear, hyperextended knee this summer, Acl repaired 10 yrs ago
    • Suzi
      Tahnk you for contacting product support. You should order the brace with a short calf becuase of your hieght.
  • From miguel f at 11/28/2013 8:47 AM
    • hi.
      On feb i had surgery of acl and meniscus remodeling, i'm ultimate frisbee player, i need a knee brace for trainig and play, the "donjoy armor knee brace with fource point hinge", can help me to no get another injury on the future games or trainings?, and what is the difference on the short or standart calf length, my hight is 180cm.
    • Miguel
      Thank you for contacting DJO. The Armor knee Brace with FourcePoint Hinge is a good choice for you. Theis brace will protect your knee while training and playing. The calf difference is 1 inch between the two, but I think you will be fine with the standard calf
  • From Mary at 11/10/2013 7:51 PM
    • My son is a wrestler with a torn ACL but where he feels no pain and had wrestled with it in that condition for several weeks before getting it diagnosed. Because he would like to postpone surgery until after the season, we have been directed to investigate the DonJoy Armor Knee Brae with Fource Point hinge. Would this be appropriate for a wrestler?
    • Mary
      Thank you for contacting product support. I do not believe he would be able to wrestle with the Armor knee brace on. It is a rigid knee brace made of Aluminum and either would have to padded or would be banned from wearing it at all during competition. I would check with his coaches and see what is permissable to wear during competition. Most likely he would not be able to wear anything that an opponent could grab onto. If he could wear a soft hinged knee brace, I would suggest the Playmaker available here:, but this might not even be allowed.
  • From Ivan at 11/5/2013 9:24 AM
    • Will the DonJoy Armor Knee Brace with FourcePoint Hinge provide support to the leg at the knee level when while walking your leg fails you and you tend to fall.
    • Ivan,
      The Armor with FourcePoint Hinge will provide support to the ACL/MCL/LCL. It will damper the extension of the leg when going into extension and decrease the amount of time the ACL is in the “at risk” position.
      You may want to look at the DonJoy Deluxe Hinged Knee Brace. This will offer you some compression as well and the hinged uprights for added stability.
      Thank you for your question and please contact us if you’d like any more information.
  • From Nicole Smith at 10/26/2013 5:10 PM
    • I completely tore my ACL playing basketball and am hoping to push off my surgery till February to play this season. I need a brace that will help with my instability and allow me to play basketball. Would the Defiance 3 custom brace or the armor brace be better? could i use either one of them and be able to play basketball for a few months
    • Nicole
      The Defiance III would be the better of the two braces, it is the Gold Standard of ACL braces. As far as playing basketball without haveing the ACL fixed, that is a tougher question to answer. The Defiance can help with prtecting your knee from further damage, but the brace alone will not allow you to be able to play. First you should discuss this with your physician and your muscles in your knee need to be straonger than before you hurt it to be able to stabilize your knee without an ACL. I would seriously discuss this with your doctor.
  • From Perry at 10/10/2013 12:14 AM
    • My College football player and High School daughter are both one year out of ACL reconstruction. They both just got this brace last week. The 10 degrees of flexion and not being able to extend completely is driving both of them crazy. Their anterior tibias are black and blue. We got the braces from Ortho Express and they came out to adjust. All they did was to turn off the resistence but the brace still will not go into full extension. Do I need to get the Extension zero degree stop kit? Seems like it would be better to allow full extension but with the resistence on the last 25 degress. Is this what you would recommend? Thanks
    • This is not a common issue with the 10 degree stops. I will be happy to email you a PDF of proper fitting for the brace.
  • From Jake at 8/12/2013 6:29 PM
    • I'm an offensive linemen and have the donjoy armor fourcepoint. I have noticed that I can't run as fast as I can and the brace is prohibiting me from full knee flexibility while running. Any suggestions on how I can run better in the brace?
    • Hello Jake,

      You have full flexion in this knee brace. There is extra tension when you straighten your knee to protect your knee from going into full extension (straight knee). It is in the straight position where the ACL is commonly torn. If you want to adjust the amount of tension, take the condyle pad off, and move screw into the #1 position on both hinges.

      Thanks for Contacting Donjoy.
  • From Anish at 8/11/2013 10:09 PM
    • Hello,
      I have had two ACL reconstructions (one on each knee) and have recently sustained another partial tear on my first graft.
      I play a lot of sports including cricket and Mixed Martial Arts. I would require a brace that is light-weight but can be used in contact sports. However, I would be buying two braces to wear around each knee. Which brace would be the best while allowing the wearer to play sports with one brace on each knee.

    • Hello Anish,

      You have the option of the Armor Knee Braces, or the Custom Defiance Knee braces.

      Thanks for Contacting Donjoy.
  • From Ian lee at 7/30/2013 9:41 AM
    • Can the armor fourcepoint brace be worn in the water?
    • Hello,

      Yes you can wear the brace in the water, but we recommend that you rinse it out when exiting the ocean.

      Thanks for Contacting Donjoy.
  • From Alex at 7/28/2013 7:06 AM
    • Hi, I am wondering which brace would be best for me. I broke an small piece of the tibia, (tibial spine) where the pcl inserts. Luckly both acl and pcl are fine.

      Now, i am recovering the muscle, everything is fine except that still my knee is not back yet to full stability (i got an scan yerterday and results confirmed everything is fine, ligaments, meniscus, ect) so it is only a matter of full recovery.

      I practice snowboard and kitesurf. I will go kitesurfing in 2 weeks, and i want to protect my knee with a brace as it is not fully back to normal, and i would also like to keep the brace for future snowboarding or kiting, just in case...

      Now , my questions:
      1. Which brace would be best? Should i go for a legend as it is better for water? Or armour? I read that legend is not good for extreme sports...while armour is...

      2. Which set up up should i need for overall knee protection? The combined instability one? Does this set up protect less the acl or thenpcl than an acl or pcl specific set up?

      3. I am 1.9 centimeters tall and my leg has 49 centimeters (and 52 the healthy leg) diameter at 15 cm above the knee..., which size should i get? An M should be fine

      4. Could i get the short model as it is more appropiate for fitting the snowboard boots? Or i am too tall for the short?

      5. One final question: what happens if i have an accident while wearing the brace? I guess my knee will have less probability of getting injured, but on the other hand, does the probability of injuring other part of my body increase? (Ie. the hip)?

      6. What is the delivery time for US delivery? Same for any state?

      Thanks in advance for your help. Much appreciated
    • Hello Alex,

      I recommend the Armor Knee brace with FoucePoint Hinge. The Armor is the strongest frame we have and will hold up to all the contact/collision that may come with snowboarding. You can wear this brace in the water, be sure to rinse out when you exit the ocean. The short measurement refers to the Calf, it will sit higher on your calf muscle, this option is great for athletes or someone with a high/large calf or someone that is short.

      You are less likey to tear your ACL/MCL/PCL/LCL. With Strapping CI, this means combined instability, there is an extra strap with this brace.

      Standard Ground Shipping is free on betterbraces.

      Thanks for Contacting Donjoy.

  • From Vanessa at 7/15/2013 6:11 PM
    • I have had an ACL reconstruction and my meniscus was really bad so after. They recommended this brace and now that I have had it for a lot less than a year and have been playing in it. The straps are started to stretch and the padding is starting to get ruff and come apart. I was wandering if there was some kind of warranty for that sense it hasn't been that long.
    • Hello Vanessa,

      Your Brace Frame has a 1 year warranty, the straps and pads have a 6 month warranty.

      You can purchase replacement straps and pads at the link below.

      Thanks for Contacting Donjoy.
  • From Miggy at 7/4/2013 9:16 AM
    • Hi I'm an athlete who wakeboards and I'm choosing between the short calf fourcepoint armor hinge or the 4titude. I need some professional help from you guys to decide on what to get. I need to know which is more suitable for my sport and which is lighter? Thanks!
    • Hello Miggy,

      I recommend the Full-Fource Knee Brace, its the lightest Donjoy Brace. The Armor is a great brace for Contact Sports, but the Full-Fource is the brace for non-contact sports. It too has a fourcepoint hinge and available in short calf.

      Thanks for Contacting Donjoy.
  • From stephen at 7/2/2013 8:22 AM
    • hi im a medium size using the DonJoy 4titude but im planning on getting a DonJoy Armor with fourcepoint hinge for wakeboarding. im 5'6 what calf size should i get?the standard or short? and is this advisable wearing it while wakeboarding? will this give me restrictions on my movements or is it just like the 4titude? thanks!
    • Hello Stephen,

      The FourcePoint Hinge protects against ACL Tears, there is resistance in the last 25 degrees of extension. This feature can be turned off, but then you won't get the benefits of ACL Protection. ACL tears happen in extension, when your leg is completely straight.

      I recommend a Short for your calf. Short Thigh is not available in an Armor due to swooping thigh.

      Thanks for contacting Donjoy.

  • From cody at 7/1/2013 10:12 PM
    • Just got two of these braces in.. I fight bulls so there is a lot of foot planting an twisting applied. I have good knees, just got these as a prevention. Bust question is,i tighten all the straps up an seems like as I'm running it tends to slide down, or ir it dnt slide it ribs be raw on the out wide part on the bac/bend of leg... Is this to big, or is thwre a way to keep it up, or from rubbing me raw while wearing both of these.

    • Hello Cody,

      The Thigh bar and Calf bar are malleable, you can bend them if they are too big. You can also purchase an undersleeve to protect your skin. Please see the link below.

      Thanks for contacting Donjoy.
  • From tim at 6/26/2013 9:15 AM
    • hi, i am quite confused as to which brace i should use for the following activies:
      golf, hiking, running, wakeboarding, swimming, soccer, basketball.

      shoud i get the Fullfource, Fourcepoint or the Armour fourcepoint?

      Will my activities be hindered if i choose the CI option?

      can i choose the anti-migration pad and chamois & suede options? or is that only for the defiance models?

      I have a torn ACL, tear in medial and lateral meniscus.

      apologies for making this very long. thank you again.
    • Hello Tim,

      Based on your Previous Injury you should be in an ACL Brace with ACL Strapping. I recommend the FullFource or the Armor FourcePoint, because these both have the fourcepoint hinge.

      The Armor is best for contact sports, its the strongest frame brace we have. The Fullforce is our lightest brace, great for Non-contact sports. Both braces ship with an anti-migration band.

      Thanks for Contacting Donjoy.

  • From Jack at 5/25/2013 10:37 AM
    • I am a high school football player and my coach requires that I wear these knee braces during practice and scrimmages, but not in games. I have no previous history of knee injuries or instabilities, so these braces are purely prophylactic. Would this practice increases my susceptibility to injuries during the game as compared to never wearing the braces at all? My legs feel very weak after removing the braces. I am worried that continued usage of these braces will result in atrophy of my stabilization muscles, leading to a higher risk of injury in other athletic endeavors.

      Also, I have a severe decrease in speed and athleticism while wearing these braces. My calves become tired almost immediately after running around a bit, as do my upper thighs. I was worried that this was an issue with how tight my straps were, but upon loosening them slightly, they slid down through the course of practice and were rendered useless. Is there a specific way to wear the braces such that athletic performance is maximized?
    • Hello Jack,

      Wearing the Knee Braces during practices is a great idea. The brace actually trains your knees to stay out of the Danger Zone, which is the last 20 degrees of extension. Most athletes tear their ACL's because their knee is in Full-Extension(straight leg). Wearing the brace prevents your knee from getting full-extension, so it significantly reduces the risk of injury.

      Your position will determine which Knee Brace to Wear. Lineman should be in Armour's. Skill should wear Fullforce or Armour.

      Armour is the strongest frame on the market, and is designed for contact.

      If you are having problems with the brace slipping down we can send you an Anti-Migration Band. Also did you order a Short Calf Brace? The Calf bar should sit above the center of your calf, if it's below your calf then the brace is too long for you.

      Please call to speak to a Product Specialist. 1-888-405-3251.

      Have a Great Day.
  • From Carlos E. at 5/19/2013 2:46 PM
    • What colors are available for the Armour Four?
    • Hello, Carlos -

      The DonJoy Armor does not come in different colors. The only ACL brace that offers this option is the DonJoy Defiance. The Armor comes in the standard metallic silver.

      Thank you and have a wonderful day!
  • From Gemitron L. at 4/7/2013 10:18 PM
    • I Play Football And Power Lift...So My Circunfritcs Of Lower Thigh And Calf Is Slightly Larger The My Length Compared To Your Guys Chart. How Should I Go About Getting It Correct?
    • Hello -

      It would be best if you contacted our Product Specialists at 888-405-3251 and discuss your measurements. We would need you to provide us with all three measurements in order to make an appropriate recommendation.

      Thank you and have a wonderful day!
  • From Nico at 3/19/2013 11:32 AM
    • Hi,
      I tore my ACL while playing soccer and I'm looking for a good brace to start playing again when I'm done with PT.
      1 - What's the difference between the DonJoy FullForce and the DonJoy Armor with FourPoint hinge?
      2 – Can I exchange the brace to a different size if the one I get doesn’t fit well?
      Thank you
    • Nico,
      All of our braces have a 90 day return policy for any reason on betterbraces. Both braces have a year warranty, the Armor is the most rigid brace off the shelf. It is used by 21 of the 25 BCS football teams. It is used for contact sports such as footbal and soccer. The Armor is made from a stronger aircraft grade aluminum, as opposed to the FullForce. Those are the major differences.
  • From Antonio at 2/16/2013 11:20 AM
    • I tored my acl and strained my mcl of my left knee. I bought a large don joy armor knee brace. I feel that the hinges ao pressing my knee, feeling a little tight. Should they run tight or more lose? Should i change them for an extra large size?
    • Hello, Antonio -

      I would make sure that you have measured yourself correctly
      1. circumference of center of knee
      2. circumference of thigh 6" above knee center
      3. circumference of calf, 6" below knee center

      If you feel tightness in the hinge area, this may indicate that the brace is too small and you would need to go to the XL size.

      If you have further questions, please feel to contact our product spealists at 888-405-3251.

      Thank you and have a wonderful day!
  • From Aren at 2/10/2013 6:46 PM
    • Hi,

      I injured my medial meniscus in HS and have reaggravated it on several occasions over the last decade. I injured it again last week playing hockey when I took impact to the outside go my leg. I would like a brace that could give me support playing a physical sport like hockey while still giving me range of movement. I have never been diagnosed with acl or mcl tears. What knee brace do you recommend?

    • Hello, Aren -

      The DonJoy Armor Knee Brace is the most highly recommended for high contact/collision activities such as hockey and football. Because you have medial meniscus injuries and no ACL or MCL involvement, you probably do not need this type of rigid frame brace. We would recommend the DonJoy Reaction as more of an appropriate choice.

      This would allow for minimal to no limitation in your range of motion and still provide appropriate support to your medial meniscus.

      If you have further questions, please feel free to contact our product specialists at 888-405-3251.

      Thank you and have a wonderful day!
  • From Chuck Nichols at 8/19/2012 6:20 PM
    • Is this the best knee brace for our offensive linemen?
    • Outside of our custom made Defiance, yes. This brace is used by several D1 footbal programs.
  • From Geo at 6/25/2012 10:08 PM
    • Where's this store located at
    • We doo not have a physical address for a store. We sale through retail through our online store:
  • From Geo at 6/25/2012 9:49 PM
  • From matt at 6/6/2012 10:34 AM
    • Should this brace be able to handle sliding in baseball/softball? And also I ruptured my acl and I currently own this brace but was wondering if the fourcepoint hinges are good for this injury or should I disengage them so they act as a standard hinge? I wanted the fourcepoint so that after I have surgery which probably won't be until November, I could use it during my recovery as well.
    • The Armor with FP hinges would be the best product for your condition and activity level. The FP hinges are the only hinges clinically proven to protect the ACL specifically.
  • From sandeep at 5/30/2012 2:24 AM
    • hi
      I am a cricket player but 5 year back i had an bike accident and my knee was injured. since then i can not run or put more pressure on my knee, even i cannot jump from 2ft height or climb stairs. which knee brace will useful for me.
    • What is your injury or diagnosis?
  • From Ruben Ramirez at 5/11/2012 4:19 PM
  • From Abbas at 3/21/2012 1:22 PM
    • I tore my ACL a couple of years ago playing soccer and never had a reconstructive surgery. I got to the point where I am running 3-4 miles and doing plyometrics after he injury. I played some flag football yesterday for the first time since injury and had no brace on. The knee felt good sprinting and cutting but I feel a little irritation in knee today. I am now trying to get back into soccer but still a little scared and nervous. What knee brace would you recommend for playing soccer and contact sports with a torn ACL?

      Thanks in advance.

    • Donjoy Armor with FP Hinges for contact sports to protect the ACL.
  • From Phil Ingram at 1/12/2012 10:25 AM
    • I ride motocross and have both LCL and MCL injuries due to hyper-extension and straight legged impact. I am looking for the best support from re-injury but to also minimize discomfort when riding, running, etc. Will the fource point hinge be too restrictive when riding my bike?
    • The Armor with FP hinges would be recommended to prevent hyperextension. The lbs. of pressure can be adjusted for functional purposes. Should you have any questions give us a call at 888-405-3251.
  • From Joyce at 12/17/2011 6:36 PM
    • I ski, nordic and alpine, snowmobile and wakeboard. With an ACL injury. I thought the Donjoy Armor knee brace with FourcePoint hinge would be the brace for me, but does it have the Medial Ski Deflector?
    • Hi Joyce,

      Yes, the Armor is the best choice brace for the activities you participate in. When ordering select the "Armor Ski" version, this is the version with the ski deflector.

      If you have additional questions, please call 1-800-553-6019.

      Have a nice day.
  • From Chris at 7/30/2011 12:08 PM
    • I would like to order my son the New Armor FourcePoint knee braces for protection during football, however I am not sure which size would fit best.

      According to my measurements his Thigh is 23.5 Knee is 18.25 & Calf is 16
      With a Thigh measurement exactly in the middle would it be best to get the large or XL considering his small calf? or should I get the one that fits knee best and try to adjust as needed?

      L Thigh 21"- 23 1/2" Knee 15"-17" Calf 16"-18"
      XL Thigh 23 1/2" - 26 1/2" Knee 17"-19" Calf 18"-20"

    • Donjoy Armor tends to run small so I would recommend the XL.
  • From Namgo Chan at 7/19/2011 2:55 AM
    • Hi I want to order this brace, short calf , I have measured my leg and my measurements fall between a medium and small. my thigh is a 17.5 which falls into a small and my knee is a 15"(still a bit swollen from surgery three weeks out of surgery, as my other knee normal is 14") which is a medium and my calf is a 14" which is just barely a medium. should I order small or medium? can I get a custom made? Should i order the defiance 3? I do need the fource point hinge is it available with the defiance 3? I am overseas right now but want to place this order so when I get back to the states on Aug 1st 2011 I have this brace, as I have to be back in China on the 20th, these Chinese braces just don't cut it." DONJOY please help" thanks sincerely Joe "OH" what is the ski version armor??
    • I would advise to order the Medium. You will regain the muscle back in your thigh area. Until then, if the thigh feels little big, you can simply squeeze down that thigh bar to fit, till you start to again the muscle back. We do, do specials on this brace and mix the thigh and calf sizes, but that has to be done directly through DonJoy and there is additional charge for that and the brace is not returnable. Since you just had surgery, your thigh will be slighly smaller than normal, but like i said it will regain it's size as you heal. You can do a Custom Defiance that is also another way to go. The ForcePoint hinge is available on both braces. With a custom brace you have to be measured by a special measuring device before the brace can be made. Ski armor is not really different than the short calf armor. I would just advise to go with a short calf armor with ForcePoint hinge.
  • From Karen Mielke at 7/8/2011 12:52 PM
    • My son is an offensive lineman (6'2" 265#) and we got these braces today. The medial condyle pad was very uncomfortable (painful) on both braces, such that he was sure the braces were too small, but he seems comfortable now that we replaced them with two of the included flat pads. Is that okay? The braces are snug, but otherwise seems to fit. He says they don't hurt but feel "stiff," which I'm guessing is to be expected.
    • Yes it is appropriate to change out the condyle pads to allow the brace to fit properly. Are the hinges stiff or just the overall fit?
  • From Michael at 6/22/2011 6:30 AM
    • Is the FourcePoint Hinge brace a good canidate to use in watersports such as skiing?
    • Hi Michael,
      The Fourcepoint hinge is used whenever there is a need or desire to hinder Hyper-Extension, protect the ACL, and Protect the Cartilage in the knee. The Armor and the Fullforce are very good braces for watersports, but maintenance will be key. Be sure to rinse your brace with fresh water after getting out of the pool, lake, or ocean. Dry the brace well, and then use dry teflon lubricant on the hinges. And Chamois liners are a good idea also because they will last longer with water activity. I hope this helps.

  • From Nicholle Knapp at 6/12/2011 3:03 PM
    • I am a competitive high school soccer player. I recently tore my ACL and sprained the other ligaments in my knee. I am looking for a custom brace with the maximum level of protection for my ACL. Is thisa custom molded brace and if not which brace do you recommend?
      Thank you.
    • No the Armor is our highest level of off the shelf knee brace. Our Defiance is the only custom brace we offer and is the highest level of protection.
  • From Amy at 6/9/2011 11:49 AM
    • My husband has a DonJoy brace and we are wondering it there is a lock position on it. He has re-injured his knee and we need the brace to stay in a locked, straight position.
    • There is a full extension stop kit that you can get, you will have to contact your local sales rep to help you order and show you how to put the stops in and take them out. Here is the website to find your local rep:
  • From g at 3/2/2011 11:19 PM
    • Could you please elaborate on the difference between Legend and Legend SE-4 versions.
    • The design and materials of the brace are exactly the same. The Legend comes with an extra set of brace liners and condyle pads, and the SE 4-point does not have those. The SE 4-point also has a two-tone color on the thigh to differentiate the two braces.
  • From Earl M at 2/26/2011 2:31 PM
    • I have been a user of ankle braces for two years now, I have read on some articles, however, that an ankle brace might also put strain on one's knees. I am now looking to buy a knee brace. Are the knee braces meant only for those who have already suffered knee injuries or can they be preventive/protective as well? What model do you recommend for someone who just wants to protect/limit his knee from injuries? If I wore a knee brace without having been injured, does that put more risk to me because of my dependence on a brace, which thereby weakens my knees and the surrounding muscles? Thanks!
    • Hey Earl,
      There are a lot of elements to your question, so let's see if we can answer them all. Some ankle braces can put extra strain on your knees, but it depends on the nature of the ankle brace. If you are in a brace that limits the range of moition of your ankle then the extra force doese in fact have to go somewhere. However, the ankle brace would have to be very limiting in dorsi-flexion and/or plantar flexion to really cause injury to the knee. Most of our braces do not limit in those plains of movement much, if at all. Our braces are designed to limit Inversion and Eversion, which are moevements that your body normally restricts with your ligaments. However, when an injury occurs the ligaments stretch or partially tear and thus you need something to compensate for the lack of strength and support they gave you.
      Our knee braces can be used for post-injury or injury prevention. If your knees are healthy and your activity levels are mild to moderate then I would recommend a Donjoy Playmaker Brace. If you do intense sports or extreme activities then we would have to go into more detail about those activities to recommend the proper brace for you.
      there hasn't been any real definitive studies on the weakening of muscular tissue while wearing braces. Generally it's thought that a person loses some of their bio-feedback or proprioception while wearing a brace. And for this reason the general thought is that if you are only wearing a brace for injury prevention, then you should use it when you are doing activities that are high-risk. when involved in dynamic activities in which there are many variables (such as basketball, football, soccer, etc), a brace is a good idea. When in a controlled environment with less risk variables (such as jogging, lifting weights, daily life, etc) a brace would not be needed.
      I hope this answers your questions.

  • From Jane at 1/24/2011 7:26 AM
    • How much does the armor brace weigh?
    • 1.35 lbs
  • From Sophie at 1/13/2011 7:51 PM
    • I had my 2nd ACL reconstruction on my left knee last May and am looking to return to playing lacrosse and field hockey as well as take a skiing holiday. I do not play any contact sports. I tore my ACL both times playing field hockey so looking for a bit of support and reassurance. Due to the wide number of choices (from Donjoy alone!), I'm not sure what to choose, for example, why should I choose this brace over the Donjoy one that is specifcally for females? What is the main different between this new hinge and the older one? I did not injure my MCL or PCL but have a small sub-surface tear of the medial meniscus which my doctor did not consider serious and did not require any surgical treatment.

    • Hello Sophie,

      Both will address ACL.
      Both have a Medial thigh swoop.
      Both have a moldable frame for a custom fit
      Both feature FourcePoint Hinge Technology.

      Color - Armor is Grey. Female Fource is black and comes with a Custom Graphics Sticker Kit to personalize the brace to your own liking.
      Impact resistance - Armor heavier and more resistant to impact, Female Fource is lighter
      Length - Armor is Available in Standard and Short Calf lengths.

      If you have more specific questions, please give us a call at 800-553-6019 and we'll have a product specialist assist you.
  • From Joseph Tuozzoli at 1/12/2011 3:21 PM
    • Hello, Im 6'7" and have a history of severe lyme disease starting 8 years ago in which it has affected my ACL, PCL, MCL and LCL, mind you I have never torn anything, my ligaments are just worn out. Being my height, do I need something custom and if so which brace is right for me, I want to improve my skiing and get back into lacrosse but also relieve pain caused by my disease.
    • Whether or not you need a custom would depend on two things:

      1) what do your leg measurements look like (thigh circ at 6 in above knee ctr, calf circ at 6 in below knee ctr, and circ right at knee ctr)
      2) What activities do you plan on doing while wearing the brace?

      If all you measurements fit into one size range and you’re aren’t doing high impact contact sports (Football, Hockey, Dirt bike, etc) then an Off The Shelf knee brace will be fine. Otherwise, a Custom Defiance would be a good idea.
  • From Alex Gonzalez at 12/6/2010 10:18 AM
    • I just tore my ACL and MCL two weeks ago racing motocross, i am trying to postpone surgery for a year at least while the racing season comes to an end. I am basically looking for the best brace you have to support my knee and give it the best stability it needs to race motocross and do some cycling . I need the best stability for my knee to feel atble and not give way. Ive come across the donjoy armor extreme and now the donjoy armor with fource point hinge. Which would you guys recommend ?
    • Hello Alex,

      We recommend the combination of the DonJoy Armor Knee Brace with Standard Hinge ( and the DonJoy Impact Guard Knee And Shin Protector (

      Let me know @ if you have any other questions.
  • From Todd Rovello at 11/30/2010 7:29 AM
    • I am 3 weeks out of ACL reconstructive surgery, and researching which brace might be best for me. My MCL was torn as well. I lead an active lifestyle, but my main concerns are walking rough, uneven terrain for my job. I also participate in watersports, some snow skiing, and coach fastpitch softball. Contact sports are a thing of the past for me. Any advice would be appreciated.
    • Hello Todd,

      The Armor Knee Brace will definitely assist in the ACL recovery and support, as well as provide stability to the knee.

      If contact sports are not a concern, a DonJoy Legend SE-4 Knee Brace ( may be preferable to an Armor as the armor is typically used for athlete level protection..

      If a rigid brace is not a requirement, we also have:

      DonJoy Drytex Playmaker Wraparound/Sleeve

      DonJoy Deluxe Hinged Knee
  • From diane at 10/23/2010 5:28 PM
    • strap number one does not fit tight on me. As a matter of fact, there is a gap between my leg (lateral) and the brace frame. The brace frame does not follow the shape of my leg. Will this present a problem for me? I have only used it around the house at this point to try and get use to it. and I'm concerned about it sliding down during heavier activity.

    • Hello Diane,

      The DonJoy Armor Knee Brace with FourcePoint Hinge is malleable. Have you tried to bend the thigh cuffs to fit your leg?

      If you advise your Order # I can have a replacement strap sent @ no charge.
  • From André at 5/21/2010 5:48 PM
    • What's the difference between the standard and short calf lenght? Is it the same performance?
    • Standard calf: 16"
      Short calf: 14"
      (total length of brace)

      A shorter calf on the DonJoy Armor is recommended for shorter individuals (under 5'7) and patients who ski or ride motocross. The length of the brace has no effect on the functionality of the brace.
  • From Al at 4/2/2010 1:35 PM
    • What's the difference between this brace and the regular Armor? I can't figure out why this one costs $50 more...
    • The difference is due to the fact that this brace comes equipped with FourcePoint hinges.

      The DonJoy FourcePoint Hinge is the only bracing technology clinically proven to protect the ACL. The FourcePoint Hinge enhances the DonJoy Four Points of Leverage system by damping knee joint extension, improving the brace's mechanical performance, and reducing knee shear forces. The FourcePoint Hinge utilizes a spring mechanism to apply a gradually increasing amount of resistance during knee extension. The resistance reduces the time spent near full extension, or in the at risk position, increases the posterior load applied by the brace on the tibia to prevent anterior tibial translation, and gives patients a more natural gait by applying progressive resistance before reaching a firm end point.

      The resistance can start at flexion angles between 25 and 65 and engages during the last 25 of extension prior to coming to a hard stop. Five different resistance levels are available to meet rehab protocol specifications and provide comfort. The resistance can be adjusted using the supplied allen wrench to modify the set screw placement. The same wrench can be used to turn the resistance completely off by simply flipping a switch.

      Clinical studies have also shown that the DonJoy FourcePoint Hinge increases knee flexion angles during the run-stop-jump task. Because the hamstring insertion angle increases and the quadriceps become mechanically disadvantaged as the knee becomes more flexed, anterior shear forces on the tibia and ACL strain are reduced. Therefore, athletes returning to sport after an ACL reconstruction who wear a DonJoy ACL brace equipped with FourcePoint Hinges can protect themselves while engaging in activities involving the run-stop-jump task.
  • From Mark Potenzone at 3/29/2010 6:58 AM
    • We have a ForcePoint knee brace for my daughter and now we want to buy a Sports Cover for it because the straps are irritating her other leg.

      How can I tell what size brace she has?

      And is the Sports Cover the best thing to use for this?


    • The DonJoy Sports Brace Cover ( is perfect for this purpose. It covers the knee brace to not only protect others during team sports, but also the unbraced leg. It also helps keep your knee warmer and it helps keep the hinges free from dirt and debris. You can see the sizing under the padding of your knee brace and you can also measure her leg and choose the right size from the sizing chart when ordering the sports brace cover.

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