11-14XX-X 11-14XX-X 549.99

Armor Knee Brace with FourcePoint Hinge


Availability: In stock

Attention Medicare Patients

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

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Product Details

Product Description

Features & 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 (Stop kit not included)
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 (Ski/Snowboard Boot and Motocross Compatible)
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.
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.

Is the Armor with FourcePoint Hinge right for me?

Supportive knee brace for individuals with knee ligament instabilities and athletes involved in extreme or contact sports. Still not sure? Try our Brace Advisor for personalized product recommendations to meet your needs!

Designed to treat and protect:

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

Best for:

  • Baseball & Softball
  • Basketball
  • Football
  • Hockey
  • Lacrosse
  • Skiing
  • Snowboarding
  • Motocross
  • Volleyball

Reduce Your Chance Of ACL Injury When You Wear This Brace

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.

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.

Need Replacement Parts?

Shop DonJoy Armor Replacement Parts for strap kits, condyle pads and more.

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

Size Chart & Fit Help

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.


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DonJoy Armor Knee Brace with FourcePoint Hinge

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Sort by Ascending
  • T Strapp at 9/27/2016 9:25 PM
    • My son has a 1/3 ACL tear in knee and a Torn meniscus from football. We opt to have surgery after season. If he gets movement in joint the Dr would let him play this year. What brace do you recommend? Thanks
    • As a football player with an ACL injury the Armor with FourcePoint Hinge is the best brace. This is because the Fourcepoint hinge is specially designed for ACL injuries to help decrease stress on that ligament. As well the armor is our thickest off the shelf brace with a thicker aluminum.
  • T Connolly at 8/22/2016 4:27 PM
    • Where is the size shown on the brace? I want the same size but can't find it shown on the braces we have.
    • You can locate the size of your brace on the black thigh liner. Remove the thigh liner and you will see white letters on the back indicating your size.
  • Ono emelio at 8/4/2016 5:03 PM
    • Hello I'm trying to figure out what size I should order. My measurements is; above knee:24 inches center knee:16 1/2 below knee:17 1/2 . I know these measurements sit in between L and XL but I wanted to know from the professional . Cause o don't want it to be loose nor tight. Please help. Thank you.
    • Based on those measurements we would suggest a size Large.
  • Dennis Hosler at 7/26/2016 11:07 AM
    • Have had torn meniscus tears on both inner and outer parts of my left knee. May left leg is my stress leg. I need something that will give strong support to this knee to prevent pain after walking on a tread mill. I also have mild OA in this knee so I in addition I need a brace that will help with this.
    • The DonJoy Armor Knee brace with FourcePoint Hinge is a very supportive brace but if you also have OA, you may need an offloading hinge. A great brace to look into is the Donjoy OA Adjuster: https://www.betterbraces.com/donjoy-oa-adjuster-3-knee-brace
  • Walter at 7/7/2016 10:51 AM
    • My son has this brace the bottom strap needs to be replaced. How can I order one. Also I would like to order the cushions that keeps his knee in place
    • Below is the link to order the Replacement Strap Kit for the Armor/Armor Fourcepooint knee brace
  • Kristen at 6/24/2016 11:03 PM
    • My 15 y/o daughter tore her ACL playing soccer last August and had surgery in Sept. She has the Donjoy Armour brace. She has started practicing and skills with soccer and just went back to also practicing for beach volleyball. She wears her brace in the sand because, well it's sand and we don't want to risk her twisting it. What is the best way to keep it clean after as it seems to get full of sand, and she will need it within the next month when she starts playing in soccer games.
    • To keep your Donjoy Armor Knee Brace clean, it is best to rinse it with fresh water, to remove any debris from the hinge.
  • Jenna at 5/21/2016 10:55 AM
    • I am barely 5' tall and my legs aren't the longest. I'm curious about the short calf option? What are the measurement differences? And is this a good idea?
    • We recommend the 4titude for anyone shorter than 5'3. Its the shortest brace available at 14" in length. https://www.betterbraces.com/donjoy-4titude-knee-brace The Armor with the short calf option is 15" in length.
  • Brett at 5/1/2016 11:38 AM
    • I have the armour knee brace with fourcepoint hinge and I use it for soccer, I was wondering if there is anyway to keep it from sliding down my leg.
    • Make sure you have a snug fit at the knee joint, the pads should be fitting snug against you skin. If you have space or it does not fit snug you can order extra pads
  • Tyler at 4/25/2016 8:39 PM
    • Hi, I am currently looking for a brace to best support my knee in which I tore my ACL. Ideally, I would like to play soccer. Which brace would you recommend?
    • The Don Joy Armor with Fourcepoint hinge would be a good choice. The brace is for contact sports and has our fourcepoint hinge that specifically helps to protec the ACL from further injury. This brace would be your best choice for an off the shelf brace
  • ERIC at 4/21/2016 1:54 PM
    • i am looking to buy the armour brace with fourcepoint hinge. i called the canadian phone number and they told me they dont sell direct. i am wondering if i can order this brace on the better braces website?
    • Did you call BetterBraces? That number is 800 553-6019, but yes you should be able to order throught the website
  • Eric pawluski at 3/15/2016 7:58 AM
    • I had acl reconstruction 11 months ago and I play softball. I have been looking at braces for the season and I'm not sure which would be best. I also do a little skiing in the winter. I'm just looking for a brace that would give me the best protection.
    • The best option is the Defiance Custom knee brace as the fit is better since it is made just for your knee. The best "off-the-shelf" option is the Don Joy Armor with fourcepoint hinge. Both braces offer the same support and with the short calf option can be used for sking as well as softball. The warranty on frame and hinges for the Defiance is lifetime ans the Armors warranty is one year.
  • Colin at 3/6/2016 5:53 PM
    • The mesurements for my right knee are, thigh-20 in knee cap-15 in and calf-15 in. What size would be the best? Also I am growing and each year I would need a new brace, are there any options so that i could return or trade for a bigger size to save money. And a FYI the injury was straind ACL, MCL, and slight tear in the miniscus. Right guard at FHS
    • The only brace that can be re-made for size changes for a reduced cost is the custom Defiance Knee brace. The Off-the -shelf braces such as the Armor you would fit into a medium size
  • Kat at 2/28/2016 4:26 PM
    • The pictures to the left of the price at the top of the page seem to differ from the picture in the Product Description....mainly top pictures show a smooth frame, the product description shows hinges ON the frame..... which is the correct brace?
    • This is the same brace just different angles of the brace. The inside of the frame is swooping downward and the outside of the frame comes across straight then has a hard angle
  • Ashley at 2/20/2016 8:42 PM
    • I have twin daughters who play competive soccer. One tore ACL in both knees. The other daughter just returned to training for ACL reconstruction of right knee. There is a high risk of tearing the OPPOSITE knee due to compensation. I am thinking of buying the armor force point knee brace for her " healthy knee" to prevent her from tearing it. The reconstructed knee is stronger post surgery. What do you think?
    • Wearing one brace with the fourcepoint hinge will help to preven injury in both knees as the hinge will train the knees to stay out of the "at risk" position. so wearing a brace on either knee will help
  • John at 2/13/2016 1:14 PM
    • I am looking at ordering the Armor or the Defiance III and have a couple questions. I am post-op ACL surgery that was successful but I want support as I never want to tear it again, and will be using the brace for motocross, snowboarding, and surfing. (1) What is the difference between the two braces, is the Defiance III just more lightweight? (2) Which brace do you recommend for the type of activities I plan on doing? and (3) Does the Defiance III provide more support?
    • Both braces will help to prevent you from re-tearing that ACL and the braces are similar in weight. The difference is that the Defiance is a custom brace made spcifically for your knee so the fit will be better. The Defiance is a carbon fiber frame and the Armor is Aluminum. The Armor is a patient ready brace so it will fit a range of patients.
  • Sam at 2/11/2016 7:49 PM
    • Would the armor be recommended for the motion involved in squatting a barbell?
    • The Armor will not restrict knee motion in any way
  • arshia at 2/10/2016 7:14 PM
    • I torn my acl during soccer, now i am coming back to playing again, im a goalie and i play soccer competitive so which brace is best for me to not retorn it again. I want to use it during practices amd games and be able to shoot with my leg without any discomfort.
    • The Don Joy Armor with Fourcepoint hinge would be the best brace for you to wear while playing soccer. The braces hinge will help to preven a re-tear of the ACL and the strong aluminum frame will stand up to the contact aspect of being a golie
  • chris at 2/9/2016 5:57 PM
    • I love wakeboarding, snowboarding, soccer and lacrosse. Will the standard length Armor knee brace with fourcepoint hinge fit well with snowboard boots and wakeboard boots or would i be better off with the shorter calf support. Also is there a noticable difference between the two and what is the drawback to having a shorter calf support? Thanks
    • It would be best to get the short calf, it is only a one inch difference and there should be no differece with the support the brace provides
  • Grant at 2/4/2016 6:13 PM
    • I am between this Armor brace and your Fullforce. They are very similar in price, what are the main differences?

      My measurements are also something I'd like to ask about.
      Thigh: 17"
      Knee Center: 12.25"
      Calf: 11"
      It seems as though i'd have to go with a Small to fit my thigh, however my knee center and calf are within the Extra Small specs. I'd be fine with the Small to make sure it fits my thigh, however I'm worried about the extra width in the knee center area compared to my measurement. I just don't want it to be too loose there and not provide enough support. Thoughts?

      Thanks in advance!
    • The difference between the two braces is the frame thickness. The Armor is a thicker aluminum so it is best for contact sports. The thigh is too big to get the XS, you are only going to be able to fit into a small. The FullForce frame is moldable so you can maike the calf culf a little tighter around your calf. In order to make if more snug at the knee you can order the Air condyle pad set and exchange them for the pads that come with the brace. http://www.betterbraces.com/donjoy-air-condyle-pads
  • Thomas russell at 2/2/2016 1:17 PM
    • Hey I tore my patellar tendon 9 months ago. Rehab is going great and just got back to being able to run with no problems. Not I want and got the ok from my physical therapist to pick up the pace a little with contact sports. Kiteboarding, surfing, and wake boarding. All of these are pretty high impact on my knees and was wondering what would be the best knee brace for my injury. I was suggested the donjoy armor with force point hinge. Is this the best for a patellar reconstruction? How does the brace hold up in salt water? If it doesn't hold up in salt water can I get a custom one with stainless steel? Is that an option? Thank you
    • The Don Joy Armor will provide maxium protection to the knee joint and prevent injury to the ACL. In order to have patellar tendon support you would need to add the Tru-Pull Advanced Attachement, which is only available through DJO Direct. Another option for support to the Patella femoral area is the Reaction Web Knee Brace. The Reaction will provide patellar support and limit force on the Patella and patellar structures
  • Jessica at 1/27/2016 10:56 AM
    • I'm 6 months post ACL and Meniscus surgery and I'm getting ready to return to playing soccer. What is the best brace to prevent re-injury and ensure confidence as well as comfort?
    • The Don Joy Armor with the fourcepoint hinge would be the best support for your knee and the frame would be the strongest for any contact that may occur while playing soccer.
  • Miro at 1/26/2016 7:46 PM
    • I am get a brace with a short calf for skiing and soccer. When it asks me for the style the choices are armor or ski armor, whar are these?
    • You want to order the Don Joy Armor with fourcepoint hinge. Choose the short calf optiion and ACL Compartment
  • Marlon at 1/21/2016 7:46 PM
    • I have had knee surgery on both my knees from playing soccer. My right knee has had reconstruction of all my ligaments, and my left knee had to have a surgery called fulkerson osteotomy wich is basically patellar stabilization. I want to play soccer again, but I don't want to hurt my knees again. Which brace would you recommend for someone who has had pretty severe knee injuries, and wants to go back playing at full force?
    • The edon Joy Armor with the Fourcepoint hinge would be the best brace to support the knee during soccer and prevent further injury. The braces hinge will help to train both knees to stay out of the "at risk" position and prevent further injury
  • Lisa at 12/21/2015 10:00 PM
    • I just took my measurements and for my leg that has had the ACL reconstruction (several years back) it is slightly smaller than my other knee. It is also measures right on the cusp between a small and a medium. My measurements are: calf - 13 1/2"; knee - 13 1/4"; Thigh - 18 1/2-19". Which size would you recommend as I want to make sure that the knee brace fits appropriately?
    • I would suggest trying the small. The thigh is at the beginning of a medium but the calf would be to be in a medium
  • Estevan at 12/8/2015 5:05 PM
    • I have a slight mcl tear and I play football for high school ( I'm a lineman ) what braces would you recommend?
    • The best protection for a lineman would be the Don Joy Armor Knee brace with the Fource Point hinge. The brace is made of double thickness Aluminum to with stand contact and the hinges will provide protection for a ligament injuries. http://www.betterbraces.com/donjoy-armor-knee-brace-with-fourcepoint-hinge
  • Jordan at 12/1/2015 9:24 PM
    • My wife has a partial tear of her ACL and bone bruising. The orthopedist said to rehab it and see if she could get back to skiing and snowboarding. Trying to choose between the Armour and the Full force but can't figure out the main difference other than your site says the Armour is best for skiing/snowboarding. Can you explain the main difference?
    • Jordan
      The reason the Armor is better for skiing is because the frame is double the thickness of the FullForce. Both braces will function the same but for an activity like skiing you will want a tougher frame
  • Bart at 11/20/2015 1:06 PM
    • I don't have an acl and canines with drop foot my knee hyperextends when I walk. Can the hinges be set not to straighten all the way? If so, how strong are they? I have a knee cage brace, but it's bulky and I can't sit with it, so I'm looking for alternatives for an everyday brace.
    • Bart
      The Brace comes with a 10 degree extension stop installed in the hinge to prevent hyper-extension. If you have serious hyper-extension issues you may need a greater stop or a rigid knee brace. The stops can be by a medical professional directly from us.
  • Joe at 11/12/2015 7:04 PM
    • I did the measurements recommended on the site, and it indicates that I am a large. However, I am unsure if I should account for my thigh and calf to get bigger as I do more physical therapy to strengthen my supporting muscles around my ACL reconstruction. Do you recommend going up a size?

      Current measurements: Thigh 22.5, Thigh 17
    • Joe
      You can measure your non-operated leg and get the size that would fit that side if you think you will be getting back to that size
  • Marcus at 10/20/2015 11:23 PM
    • Hey I need to get ACL reconstruction surgery for a torn ACL and I compete in the sport of Track and Field, and my events are Long Jump, Triple Jump and the knee that has the torn ACL is my left leg, which ultimately is my jumping leg. I have the option to do the surgery in a month and miss a competitive season and buy the Armour brace and wear it after anyways, or my other option is to get the armour brace custom fit, and immediately start to compete and get the surgery in the off season. My only worry is that with this brace on will I be able to compete at or close to 100% in my sport?
    • Marcus
      I would suggest either the Full Force Ligament Knee Brace. It is lighter than the Armor but still a very supportive brace. Another option is the custom A22 knee brace that will be a slightly better fit because it is custom. Most likely you will not be able to compete without a brace but it should not affect your performance.
      http://www.betterbraces.com/donjoy-fullfource-ligament-knee-brace http://www.betterbraces.com/donjoy-a22-titanium-custom-knee-brace
  • Darian Tupuola at 10/18/2015 9:23 PM
    • I need something to go under because it irritates so much I just got this Friday and practice today just made my skin burn from the straps I love it and all but it hurts trying to play softball with it having to be tight but rubbing so much, I had acl surgery may 5th I tore it in half and I just want to be comfortable and it just hurts my leg.
    • Darian
      Try the Lyra/Cotton Under sleeve. http://www.betterbraces.com/knee-brace-undersleeve-cotton-lycra
  • Brandy at 10/12/2015 1:08 AM
    • What's the difference between the Armor and the Ski Armor styles?
    • Brandy
      The Ski Armor is an older brace with our older fourcepoint hinge and the brace is a short calf with a deflector on the medial hinge to prevent the brace from hitting the opposite knee. The Armor has been re-designed with a new lower profile fourcepoint hinge so there is no need for a deflector. The brace also comes in a short calf if you need that for skiing.
  • Chance jones at 10/11/2015 7:14 PM
    • The hinges on my donjoy armor force point brace squeak. Would it hurt the brace if I used WD-40 to fix the squeaks?
    • Chance
      Any kind of Teflon Spray will work for that squeaking
  • Korbin at 9/25/2015 3:17 PM
    • I love the knee braces but am confused about how to adjust them. In the carrying bag there are metal parts with degrees on them (30,45,60,75) where do these go?
    • Korbin
      The stops that are in with the brace can be installed in the hinge to restrict motion in the knee. It is not recommended to use them unless a medical professional installs them for you and if your physician wants your knee flexion to be restricted.
  • Siddarth at 9/19/2015 7:14 AM
    • I had an ACL reconstruction as well as meniscus repair 3 weeks back. I had purchased a DONJOY LEGEND knee brace. Would this Brace help me protect my meniscus without damaging it further?
    • Yes this Legend Knee Brace will provide protection for further injury to the knee
  • Rick at 7/19/2015 11:04 AM
    • I have the DonJoy knee brace on my left leg and wear it almost every day.
      I wear a sleeve under the brace that is changed daily. My question is
      'What is the recommended Cleaning Solution to use on the brace pads
      and cuffs and what is the frequency of cleaning?

      Thanks for the great product!

    • Rick
      The best way to clean one of these braces is to clean the entire brace wil mild soap and water then let air dry. Do not remove the pads and liners because then you amy have trouble getting them back on in the proper place. It is up to you how often you feel you need to wash it.
  • James at 6/26/2015 5:09 PM
    • I had reconstruction on my ACL and Meniscus after a lacrosse accident, and my physical therapist highly recommends swimming to strengthen the muscles. I enjoy waterspouts in a lake setting, If I want to wear my already-owned Armor brace in the water is it built to work and last while being worn in the water?
    • Yes, you wont have any issues with wearing the DonJoy Armor Knee Brace in the water. Just remember to rinse with fresh clean water and let it air dry. You may need to lubricate the hinges from time to time if you do a lot of water activities in the brace, but you can use a dry teflon lubricant to keep the hinges moving fluidly.
  • Jennifer P. at 5/11/2015 4:00 AM
    • I have a MCL injury and currently wear the playmaker brace. I was wondering if the armor brace would give a little more movement as far as for gardening and getting up and down.
    • Jennifer
      The Armor will provide with more protection than the Playmaker but because it is not a soft brace will not gather behingd the knee. It may be easier to bend than the Playmaker
  • 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. http://www.djoglobal.com/products/donjoy/tru-pull-advanced-attachment
      The Tru-Pull Attachemtn can be purchased form DJo direct by calling 800-336-6569
  • 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.
  • 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: joekitping.cheung@djoglobal.com

      Phone: +852.31.05.1415

      Location: Hong Kong
  • 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.
  • 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:





  • 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: http://www.betterbraces.com/donjoy-playmaker-ii-knee-brace-1, but this might not even be allowed.
  • 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.
  • 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.
  • 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!
  • 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.
  • Ruben Ramirez at 5/11/2012 4:19 PM
  • 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.
  • 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.
  • Jane at 1/24/2011 7:26 AM
    • How much does the armor brace weigh?
    • 1.35 lbs
  • 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 (http://www.betterbraces.com/donjoy-legend-se-4-knee-brace-41) 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
  • 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.
  • 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.
Reviews (15)


DonJoy Armor Knee Brace with FourcePoint Hinge

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This saved my son's knee within 2 weeks of purchase

Reviewed by:
Within 2 weeks of my son starting to wear the braces it saved his knee in a football game. He told me - "Dad without that brace it would have definitely been bad." Instead it was just a small bruise. Thank you Better braces. To all parents - Please buy your kids the knee braces for the football game. Worth every penny.
Posted on October 4, 2016
Would you recommend this product?Definitely yes


Reviewed by:
Great support for sports.
Posted on August 1, 2016
Would you recommend this product?Definitely yes

Outstanding Brace

Reviewed by:
This brace is absolutely amazing and it fits perfectly. The product is well made and the graphic paint job looks great. This brace keeps your knee really stable even under heavy loads and during workouts. I purchased the air condyle pads and they are not meant for working out but only for walking as I made one leak air while working out so keep that in mind if you buy them. I give this brace 5 stars.
Posted on July 26, 2016
Would you recommend this product?Definitely yes

Great Knee Brace!!

Reviewed by:
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.
Posted on January 17, 2015


Reviewed by:
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.
Posted on December 7, 2014

Life changing!

Reviewed by:
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.
Posted on November 16, 2014

It worked

Reviewed by:
Got one (plus a patella stabilizer...$60 add-on) for my son who said...quote...
Pain went from a ten when walking
or any other movement
to almost a zero.

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.
Posted on November 10, 2014

Great knee brace and gives you confidence while recovering from ACL reconstruction!

Reviewed by:
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.
Posted on October 29, 2013

My DonJoy FourcePoint Hing Brace enabled me to get my Black Belt

Reviewed by:
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-
Posted on June 2, 2013

OK Quality

Reviewed by:
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.
Posted on July 24, 2012

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