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OA Reaction Web Knee


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A Discreet Solution for Osteoarthritis Knee Pain  Read More

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Product Details

Product Description

Features & Benefits:

Lightweight, Low-Profile Pain Relief
Made out of lightweight silicone this brace is low-profile so you can wear it under pants, skirts, or with exercise clothing as a discreet solution for pain.
The Silicone Web Technology scientifically designed to provide shock absorption and anterior knee pain relief treating OA of both the knee joint and the patella.
Four-way, Adjustable Wraparound Design
Comfortable, form-fitting design creates a custom- like fit for most legs that is easy to apply
Patented, Integrated Silicone
Comfortable offloading of the knee with a nonslip cup effect; the hexagon design allows air pockets to gently support the knee
Easy to Wear
The most open and lightweight design available in OA knee bracing

Is the OA Reaction Brace Right for me?

Everyday solution for arthritis knee pain and those needing support for mild activities like jogging, golf, hiking, tennis or walking

Designed to treat and protect:

  • Arthritis

Best for:

  • Everyday activities
  • Golf
  • Running
  • Tennis
  • Walking

A Discreet Solution For Osteoarthritis Knee Pain

The OA REACTION WEB is the lowest profile knee brace on the market to treat early or mild OA. The patented silicone web technology provides a custom fit that won’t slip; it’s so comfortable, users may forget they’re wearing a brace. A new level of bracing comfort for those with early to mild OA of the knee, or early joint space narrowing. OA REACTION WEB offers discreet wearability utilizing mild offloading and proprioception to help reduce knee pain for mild to moderate activity.

DonJoy, a pioneer in bracing technology, is taking OA bracing to the next level of comfort using breakthrough silicone web technology. OA REACTION WEB offers the thinnest and most open framework available. OA REACTION WEB gives those with OA knee pain the relief they need in a comfortable, lightweight, low-profile solution that can even be worn under clothing before, during and after activity. Designed for those who participate in mild activity, obese patients, and active aging patients who jog, hike or play tennis or golf.

Note - The OA Reaction comes with an undersleeve that is the exact size of the brace you order, if you wish to have a different size sleeve or need a replacement, purchase a Reaction Knee Undersleeve.

Shop our complete selection of knee braces 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 diameter you measure here to choose your size.

Note: This product runs small. If you measure between sizes we recommend going up one size for optimum comfort and fit

    Size Thigh Knee Center Calf
    XS 13" - 15 1/2" 12"-13" 10"-12"
    S 15 1/2" - 18 1/2" 13"-14" 12"-14"
    M 18 1/2"- 21" 14"-15" 14"-16"
    L 21"- 23 1/2" 15"-17" 16"-18"
    XL 23 1/2" - 26 1/2" 17"-19" 18"-20"
    XXL 26 1/2" - 29 1/2" 19"-21" 20"-22"
    XXXL 29 1/2" - 32" 21"-23" 22"-24"

    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 OA Reaction Web Knee

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  • Neal at 10/8/2015 7:13 AM
    • 46 years old and regular short distance runner. I had ACL and Meniscus surgeries almost 2 years ago. Doc says I have arthritis in the knee now but otherwise good to go. I am a jiujitsu instructor and wish to continue training. Looking for a brace that is low profile (I can wear and not injure others) and provide support I need - would you recommend the OA Reaction brace or the Reaction brace? I don't wish to crush my opponents with the brace, just get support and lessen pain - thanks!
    • Neal
      Either brace would be what you are looking for. The difference is that the OA Reaction has a singe hinge on the brace so a harder structure that may injure others. You may want to try the regular Reaction first and see if that provides enough pain relief for you.
  • Wanda at 10/8/2015 6:53 AM
    • I have bone on bone OA on my right knee and recently had a left hip replacement and can't take time off work again for another surgery. I travel in my job so walking through airports and convention centers is very painful. My surgeon gave me a Donjoy Economy Hinged Knee Brace but it is so bulky it can be seen under nice dress pants. And since my right knee is turning in towards my left knee when I walk this brace rubs against my right knee. Would the Reaction Web Knee Brace be a lighter better choice?
    • Wanda
      The OA Reaction Web Knee brace will be a lighter lower profile brace that should give you more relief than the economy hinged knee. There is a singe upright and hinge that will be located on the inside of your knee that will help to push the knee towards the outside. The brace is for mild OA so it may not take all of the pain but it should be better than what you are currently wearing
  • Bette J at 10/4/2015 6:20 PM
    • What knee brace would yourecommend for an active 90 year old woman whose right knee is turning in and has arthritis in the same knee? She is in a lot of pain.
    • Bette
      I would recommend either the OA Reaction Web Knee brace for the right lateral leg or the OA Lite knee brace for lateral compartment OA.
  • Michael at 9/24/2015 7:47 PM
    • Can this brace be worn under blue jeans or must it be worn over the jeans?
    • Michael
      Yes this brace can be worn under pants
  • Neal Haralson at 9/22/2015 2:59 PM
    • I had ACL and Meniscus surgeries 2 years ago, am 46 years old and remain active. I need a brace that fits well, and allows me to run and train in martial arts every day (competitive, but not professional). I need a brace that I can wear and won't injure my opponent in kicks as well - I have a heavy duty donjoy brace, but it is too bulky and I injure my opponents when wearing it. Thank you for any guidance!
    • Neal
      Unfortunately if you want a brace to support the ACL only a brace with a hinge will do that. Other than what you are currently wearing the Playmaker II knee brace is a soft hinged knee brace.
  • Wasif at 9/22/2015 8:57 AM
    • I am looking to get this brace for my dad who has severe pain in his left knee. He also has a bit swelling around his knee cap. I want to make sure i order the right brace and right size for him.
      His measurements are:
      Calf: 16"
      Knee: 18"
      Thigh: 20"
    • Wasif
      You will want to get the large size but you will also need to know which side of the knee needs to be unloaded. Usually the painful side of the knee will determine that.
  • Jeremy at 9/19/2015 8:07 AM
    • I recently had surgery to correct a tibia plateau fracture including a plate and screws. Previously I have torn ligaments and meniscus in this knee. I am looking for a low profile brace for light activity such as hiking and tennis.
    • Jeremy
      With your history you might want to wear a light hinged knee brace to give you some general knee stability. Either the Don Joy Economy hinged knee brace or the Don Joy Performance Bionic Knee would be good choices. Bothe are hinged knee braces.
  • Carly at 9/16/2015 3:32 PM
    • I have dislocated my left knee several times (where the patella has dislocated laterally to the left) and was wondering if this brace would be a good fit. Currently I can bend it about 90% , but have strong pain on the inside of my knee.I have mild arthritis in this knee. I like how sleek this brace is, that was the main reason it drew my attention. Please let me know! As well as which option would I get, if I am using it to as a patella stabilizer as well.

    • Carly
      The Reaction web Knee Brace is a great brace for patellofemoral pain and dysfunction, but since you have had several dislocations I fear it may not be the right brace for you. Take a look at the Tru-Pull Lite knee brace. This brace is made specifically to help prevent patellar dislocation. The brace is alighter version of our other brace called the Tru-Pull Advanced system. The brace is much smaller and the material is light wieght.
  • Robyn Gomez at 8/28/2015 12:44 PM
    • Inside of both knees are bone on bone. Need help ordering correctly. Based on the answers to questions of others I believe I should order Medial Left/Lateral Right for my left knee. Would it be Medial right/Lateral left for the right knee?
    • Robyn
      Correct you will want the medial left/lateral right for the left knee and the medial right/lateral left for the right knee. When you recieved the braces the hinge should be on the outside of the braces, pushing towards the affected compartments
  • Lee at 8/28/2015 9:30 AM
    • My pain is on the center and top part of my right knee and on the inside. I have very little cartilage left. The pain worsens when I go up and down stairs or squat. Would the OA Reaction be the best option for me? If so, just making sure I should order the Medial Right/Lateral Left?
    • Lee
      The OA Reaction might give you some relief. YOu would want the right medial/left latera brace. the upright would be on the outside of your knee pushing towards the inside of your knee.
  • Mary Edwards at 8/26/2015 8:44 AM
    • I have a history of lateral meniscus removal, knee pain and arthritis. It is worse in my left knee and my ortho doc recently ordered this brace for me for the left knee. I received the brace and the hinge with the cusion is on the medial side of the brace (when put on the left knee). My issues, are more on the lateral side of my left knee. Did I get the correct brace?

    • Hello,

      Thank you for Contacting Betterbraces.

      You did order the correct brace. If you have lateral OA the brace that adjusts will be on the medial side. The medial hinge pushes in to open up the joint space on the lateral side of the knee.

      Please contact us at 800-553-6019 for additional questions.

      Have a Great Day.
  • Miriam at 8/22/2015 3:16 PM
    • After hip revision (replacement of a replacement) surgery, my right leg is knock-kneed; it gets worse when I walk on it. My abductor is strong, but sore, likely because a wire from the surgery is rubbing against it.
      My therapist has recommended a DonJoy OA Reaction web knee brace.

      My questions:
      1) Is this the best solution to permit me to walk freely, without injuring myself further -- and, with luck, help me to recover?
      2) If so, what model should I get: the right medial, or . . . ?
      3) My measurements are:
      Thigh 6" above patella, 16 1/2"
      Knee center: 15"
      Calf 6" below patella, 14"
      What size would you recommend?

      Thank you for your help.
    • Miriam
      You would want to get the right lateral brace. This will have the hinge on the inside of your knee causing a push to the outside of your knee. Looks like a small should fit
  • Jesper at 8/20/2015 9:16 AM
    • Since 50% or more questions are about which brace to use (left / right / inside / outside, may I kindly suggest you begin to use those words instead of medial right / lateral left etc? I would be more comfortable making a purchase based on explanations I immediately understand.
      In the meantime: I have OA pain on the inside of my left knee; which brace is right for me?
    • Jesper
      That would be the OA Reaction Web Knee Brace Medial Left/Lateral Right. Which translates into this brace is for your left leg unloading the inside of your knee. We are happy to answer any questions about medical terminology which is what what use to describe the affectied compartments
  • Matthew at 8/8/2015 6:44 PM
    • I'm an active person that wants to continue to stay active with less pain. I had a R lateral meniscectomy, and since have torn through the articular cartilage on my femur. I received a bone plug via OATS allograft to repair, but the damage is done. Because of this, I now have OA in my R knee affecting the lateral side more than the medial. I have three questions:
      1. Does this brace provide full knee flexion up or aprox to what 0-140?
      2. Would this be the ideal brace for my condition?
      3. Would this be suitable for soccer/basketball/etc?
    • Matthew
      The answer to all of your questions is yes. You will have full range of motion in the brace and this would be appropriate for lateral OA.
  • Heather at 7/23/2015 10:15 PM
    • I have mild OA. What if my knee pain is primarily posterior and anterior - distal kneecap?
    • If you have mild OA located on both sides, there is no brace available for that. The offloading hinge has to go on the opposite of where the OA pain is located at. The hinge itself helps pushes inward/outward to help alleviate the pain that you are having from that bone on bone pain in your knee.
  • Denise at 7/18/2015 7:38 PM
    • I had recent knee surgery on my left knee for a meniscus tear and arthritis was shaved during the surgery. I find myself having pain throughout the knee on a constant bases. When following up with my doctor with an x-ray, it showed server arthritis still in the knee. This pain has limited my activity and ability to stand or walk for frequent periods. Would this brace help and which one should I order?
    • Denise
      The OA Reaction Web Knee Brace is indicated for those with mild OA that is limited to one side of the knee, either meially or laterally(inside or outside). So to determine which brace to get you will need to know which side of the knee is the side with the OA and choose that brace. The single upright will be on the opposite side of the knee that has the OA and will push the knee in that direction to unload that compartment to decrease pain
  • Jeromy at 7/17/2015 7:17 PM
    • My wife has been told that she has OA in her right knee. If she pushes her knee to the center of her body, the pain is lessened. Which medial/lateral option do we choose?
    • If her OA is located on the outside part of her right knee, she will need a lateral right OA knee brace. If her OA is located is on the inside of her right knee, she will need a medial OA knee brace.
  • Cherry at 6/5/2015 6:18 AM
    • I am looking for a lightweight, non-bulky knee support for my 96 year-old father who has severe OA and knee pain. His leg bows out when he bears weight on it, and then the ankle rolls out, so I assume he needs a lateral condyle pad. I like the looks of the OA reaction web knee brace. Would this help him? He is not walking too far (5-10 min.walks), but needs more stability in his knee when he walks with his walker.
    • Yes, the OA Reaction Web Knee will help correct his varus issue. You would need to select the Medial option, and the brace will come with the hinge on the lateral side to help push the knee over to correct.
  • j at 5/31/2015 6:18 PM
  • Scott at 5/28/2015 12:45 PM
    • Left leg crushed 30 + years ago ..Current pain inside left..Thigh-16 in..Knee-16 1/2 in...Calf-13 in....Would this brace work? What size?..Other recommendations?
      Thank You
    • Scott
      The Reaction Web Knee Brace is for those having anterior knee pain and might not offer you enough support. You may want to look at a hinged knee brace instead such as the Economy Hinged knee Brace.
  • Catherine at 5/13/2015 4:39 AM
    • My osteoarthritis is focused on my patella, patellafemoral arthritis - extensive chondromalacia with some bone on bone with a misaligned patella. I do have the non-OA Reaction web brace, would this one be better or should I stick with the other one? I've no ligament issues, there is some tendonsis. My Ortho said it would be good to unload the front of my knee if possible. I don't think the regular Reaction Web does that. I do like the Reaction Web, though it is difficult to get it on properly - would the the OA version provide more benefit?
    • Catherine
      If your OA is under the kneecap then the regular Reaction would be the best for your knee. The OA Reaction is for someone who not only needs support around the kneecap but also has either medial or lateral compartmental OA and the brace unloads one of the other side of the knee. It sounds like you do not have that so I would stick with the regular Reactioin
  • Dustin at 4/27/2015 9:13 PM
    • I have bone on bone knee pain it's horrible but I can't afford a good knee brace will my insurance cover this? I'm in so much pain
    • Dustin
      We do not take insurance on this website only a credit card. In order to get this brace billed through your insurance you will need to contact your local Don Joy Sales Rep. You can find you rep here:
  • Michelle at 4/23/2015 10:53 AM
    • My pain is on the top part of my left knee and some on the inside. I have been diagnosed with patellar tracking patellofermal syndrome as well as early, mild arthritis. The pain worsens when I bend greater than a 90 degree angle (like in a squat). Would the OA Reaction be the best option for me. If so, which one would I order....the RL/LM? Thank you!
    • Michele
      Yes the OA Reaction would be a great choice for you. the brace will offer pain relief around the patella and you can order the left medial/right lateral brace to unload that inside of your knee. When you receive the brace the hinge will be placed on the outside of the leg.
  • Nick at 4/17/2015 6:20 PM
    • I am a very active older male with significant (bone on bone) arthritis on lateral right knee, but so far minimal pain. I ski and hike all year and want to slow down the degeneration of my knee and put off a knee replacement. A brace was prescribed to unload the knee but the issue I have for skiing is that it is so long my ski boots hit it, so cannot be worn. Are the Reaction or OA Reaction short enough to be worn with ski boots.? Thanks!
    • Nick
      The OA Reaction is short enough to fit boots underneath it but it is for mild OA, so it may not provide enought unloading for that compartment that is bone on bone. Some of our other OA braces such as the OA Adjuster 3 are for severe OA, they also have a shorter calf frame.
  • Mason at 4/17/2015 12:38 PM
    • I just got meniscus repair a month ago and I'm going through physical therapy right now and I'm wondering if the web brace would help me in basketball
    • Mason
      Yes the OA Reaction Web Knee Brace would help you. You will want to get a brace to unlad the side that your meniscus was repaired
  • Matt at 4/15/2015 8:59 AM
    • I'm not sure what option to pick for this brace. I have early OA in my right leg, and my pain is dead center of the knee - the patella - I don't know with of medial or lateral would be better?
    • Matt
      Since your pain is right in the front of the knee I would suggest going with the regular Reaction Web Knee Brace instead of the OA version. The brace will help to relieve that anterior knee pain you have and is also good for mild OA.
  • Rick at 4/8/2015 9:54 AM
    • I received my OA Reaction Web Knee Brace yesterday. The top of the undersleeve is constantly rolling down. Also, the brace tends to slip down lower than suggested when walking such that the top of the knee cap opening is mid-patella.

      Would you suggest the next larger sleeve size to address the sleeve rolling down?

      Any suggestions on adjusting either the top or bottom velcro straps to address the brace slipping down?

    • Rick
      Is it possible that you need a smaller brace? It sounds like maybe a smaller sleeve and brace will stay on better and not slide down. A bigger sleeve will not work.
  • Kelly at 3/30/2015 6:59 AM
    • I have had a full knee replacement on my right knee. I have pain on the medial side of the knee after walking up stairs or walking. I also have a torn meniscus on the left knee and have pain on and off on the medial side. Can I get a brace for each knee or is the OA brace the right one for either knee?
    • Kelly
      You will need to get a right medial/left lateral for your right leg and a left medial/right lateral for your left leg.
  • Terry at 3/27/2015 8:24 PM
  • Cathy at 3/26/2015 6:09 PM
    • I had a total knee replacement 4 months ago. My PT recommended getting a knee brace for lateral support when I go back to playing tennis. He said something like an ACL brace with hinges. I would like something that isn't too hot or bulky. Which brace would you recommend?
    • Cathy
      The OA REaction Web has a single upright and will unload one compartment of the knee. If the hinge is on the lateral side the brace will unload the inside of the knee. The webing design will give support to the kneecap and decreas anterior knee pain. I suggest you show the OA Reaction to your PT and ask them if this is sufficient for you.
  • dalek at 3/17/2015 8:15 PM
    • bone to bone on inside of rignt knee I believe I will be a medial right but between sizes M or L. here my measure:
      thigh= 19"
      knee= 16 1/2"
      calf= 16"
      need help to make best fit
    • Dalek
      Size medium, for right medial
  • Jay at 3/17/2015 10:48 AM
    • OA Reaction for Right Knee:

      Thigh: 20"
      Knee: 15"
      Calf: 14"

      Medium or Large?
    • Jay
      I would try the medium
  • Francis at 3/15/2015 8:51 PM
    • I have OA on my left knee and I have 2 questions:

      1. If the pain is in both sides, is the right knee brace Reaction?
      2. If the pain is inside of my left knee, is the right knee brace OA Reaction Web?
      2b. How do I order it? medial or lateral, etc?

    • Francis
      1. The Reaction might work better if pain is on both sides.
      2and 3. The OA Reaction left medial/right lateral is the correct brace
  • Lou at 3/13/2015 11:02 AM
  • Debbie at 3/10/2015 6:35 AM
    • what size would you recommend if I purchase the donjoy oa reaction web
      my measurements are Quad18, Knee 14, calf 12
      thank you
    • Debbie
      These do tend to run a little small so I would suggest the medium
  • Mike at 3/9/2015 8:12 AM
    • is the hinge on the OA brace adjustable. And if so why would you need to adjust it. What are you trying to achieve with the hinge (placement, pressure, etc)

      Thanks much
    • Mike
      The hinge comes already pre-loaded with 3 degrees of offload. The upright is aluminum so it can be manually bent to apply more load if the 3 degrees is not correcting the pain on the opposites side of the leg.
  • Sherri at 3/5/2015 4:33 PM
    • Thigh measurement: 23.5
      Knee: 16
      Calf: 16.5
      Do I order large or extra large?
    • Sherri
      I would suggest the larger size, XL
  • Mary at 2/25/2015 12:17 PM
    • I don't understand the option, or don't know which one to pick at best. Knee is bone on bone, broke off a spur or something. Need support to walk, want to lose the crutch. Replacement will happen eventually, but definitely not this year. Pain is mostly in front but not comfortable anywhere.
    • Mary
      Our OA braces are used to unload one compartment either the medial(inside of the knee), or the lateral(outside of the knee). The hinge is placed opposite of the compartment and ment ot push the leg into a more straight position which will unload that painful compartment. If you have pain on both sides of the knee then you may need to go with a regular hinged knee brace to give you general support. The Deluxe Hinged Knee Brace will give a more general type of knee support.
  • Scott at 2/24/2015 9:06 PM
    • The pain I experience is on the medial right and the back side on my leg, directly behind the knee, I recently did have an x-ray done and the doctor said he saw some arthritis, is this the right brace for me?
    • Scott
      Yes this brace is for mile OA and you could get the right medial/left lateral brace. when you put the brace on the hinge will be on the outside of your leg. The unloading force will push your knee towards the medial side to help reduce some of that pain
  • Ava at 2/23/2015 2:00 AM
    • I have severe VonWillebrand's disease which is a bleeding disorder where my blood won't clot without special medicine through an IV. I play softball and have a weak knee and mild pain. Are these braces recommended for playing sports? Will they start in place while running?
    • Ava
      This braces are made for sports and should stay in place
  • Laura at 2/17/2015 2:30 PM
    • I have had several knee surgeries, but am struggling with arthritis pain (mostly medial meniscus). I have tried dozens of knee braces in the past, but have not been satisfied as they slide down my leg, are uncomfortable to wear all day, and cut into the back of my knee. I like the idea of the sleeve under to help for comfort, but will it still be secure and not slide down? Will this brace work for what I need it for?
    • Laura
      Yes this brace should work for the pain you are experiencing and this brace will most lilkley not slide down. You would want to get the brace that will unload medial.
  • DENNY at 2/9/2015 2:02 PM
    • DonJoy OA Reaction Web Knee the options i dont know which one would be the correct for me
      outside mostly pain on right knee mild to moderate depend on activity
      i have 2 problems from my knee
      knee cap need to be aligned (tracks inside lower left) and have moderate ware of cartilage lower left & middle groove under knee cap of my knee
      will this brace be good for me or do you recommend another one
    • Denny
      You will want the right lateral/left medial brace. The brace will have the hinge and upright on the inside of your knee and will push towards the outside to unload that compartment. This unloading will hopefully decrease some of the pain you are feeling on the outside of your kne and the webing will help decrease pain under the kneecap.
  • Laura at 2/7/2015 7:17 PM
    • I have pain on inside of left knee, what would I order for the oa reaction knee brace?
    • Laura
      You will want the left medial/right lateral knee brace. When you receive the brace the hinge will be placed on the outside of your left knee.
  • jaclyn bader at 1/15/2015 7:25 PM
    • I had a total knee replacement, left leg...... I have moderate to severe oa... I would like to know if this brace will help my knee pain and give me stability..... I have pain on the inside of left knee so I need to know which one to order? Medial left? Thanks, jacki
    • Jacki
      This brace is for mild OA so it might not give you any relief if you have moderate to severe OA, but you can try the brace to see if it does give enough offload. You will want to order the left medial if you would like to try the brace. We do have a 90 money back guarantee if it does not work for you.
  • Paul at 1/13/2015 10:49 AM
    • I have both a patellar tracking issue and early, mild OA due to medial meniscus tears. It seems that the Reaction Web is made for the former and the OA Reaction Web for the latter. Which would you recommend for my situation? I'm still very active and want something that will reduce the pain I get from playing tennis.
    • The OA Reaction Web Knee Brace is for those who have both patellar tracking and mild compartmental OA
  • Nik at 1/6/2015 8:34 AM
    • I have OA in my right knee, the knee goes inward towards my left knee. My leg looks bent from the front. Most of my pain is on the outside of my right knee. Which brace would I need? Lateral Right???
    • Nik
      You will want to get the lateral unloader. For the Reaction OA it will be the right lateral /left medial. When you receive the brace the hinge will be on the inside of your knee pushing to try to correct some of that "knock kneed"
  • Thomas at 1/2/2015 3:25 PM
    • Currently have a knee brace for left leg for OA that has an adjuster wheel to push from the inside knee(right side) out towards the outside of knee(left side). Would like to purchase the Donjoy OA Reaction Web Knee Brace. Would I need the medial right/lateral left to give me the same adjustment?
    • Thomas
      That is correct you would need the right medial/left lateral knee brace.
  • Gary at 12/19/2014 2:20 PM
    • my pain is the left (outside of my left knee) would I get the medial left?
    • Gary
      You will want to get the left lateral brace/right medial brace. When you receive the brace the hinge should be on the inside of you leg. Our brace unload the opposite side so if you need lateral unloading the hinge will be on the medial side.
  • Stephen at 12/17/2014 2:13 PM
    • Have mild OA of my right knee, the pain is on the inside. Which brace do I need to order?
    • Stephen
      The OA Reaction would be the right brace for you. the brace is for mild OA. You would order the right medial/left lateral brace
  • Melinda Whitman at 12/10/2014 3:40 AM
    • I ordered the Medial Left or Lateral Right for my Left Knee. The pain is on the right, inside of the left knee. The brace I received has the soft, silicone condyle pad on the left side of the brace. Was I sent the wrong one? Or did I order the wrong one?
    • Melinda
      If you have pain on the inside of your knee the hinge of the brace will go on the outside of the right leg. The hinge should be opposite the area that hurts to unload that medial side.
  • Chuck Dirienzo at 12/8/2014 10:13 AM
    • If the pain is on the outside of my right knee, what option do I choose?
    • Medial left/ lateral right
  • steve at 12/3/2014 11:41 AM
    • How is this different than last years & current reaction brace
    • Steve
      This brace has a single upright and hinge that goes on the opposite side of the affected compartment and unloads that affected compartment. So this brace will help either medial or lateral mild OA by unloading that side as well as providing the webing to decrease anterior knee pain. The original Reaction web does not unload compartments it only helps to decrease the anterior knee pain.
  • Jeff at 11/24/2014 8:53 AM
    • I have a 25 year old acl replacement on my right knee,have some arthritis and the pain is on the out side right knee , I snowboard and downhill mountian bike what brace would you recommend?the web brace looks like it would be great for snowboarding, thanks Jeff Fulton
    • Jeff
      The OA Reaction Web brace will not protect the ACL at all, but will help with mild arthritis Sounds like you might need a lateral unloading. A brace that will protect the ACL will be either the Playmaker II with the Fourcepoint hinge. or the Don Joy Armor Knee Brace with Fourcepoint hinge.
  • Marion Godwin at 11/16/2014 12:44 PM
    • Can this brace be adjusted to lock the knee in different positions, i.e. 45 degrees
      90 degrees, etc. ?
    • Marion
      No this brace does not do that, it does not have metal hinges on it. The TROM Advanced is the only brace on this website that will do that.
  • Tia at 11/4/2014 2:23 PM
    • I have seen multiple comments about both of your web braces having poor Velcro quality and having to replace it within a few weeks. Have you fixed this problem? Other people have stated that yiu have yo practically cut off circulation to get it tight enough not to slide. Are there braces out there that will stay put and last?
    • Tia
      We have updated the velcro on the Reaction Web knee Brace, with a better velcro hook to address the problems people were having with the earier brace.
  • Neoma at 10/22/2014 2:31 PM
    • Hello,
      It was stated that this was for early cartledge degeneration of the knee. I have moderate to sever degeneration under the patella, where my knee hurts around my entire knee, will this knee brace help or is there one that would work better.

      Thank You
    • Neoma
      The OA Reaction Web Knee Brace is for those with mild compartmental OA in the knee. If you have OA under the kneecap the Reaction Web Knee Brace would be the correct brace for you. The Reaction's web design is going to absorb force on the fron tof the knee a dispearse the force away from the kneecap to decrease pain.
  • Jerry at 10/11/2014 5:45 PM
    • I don't understand the options. Does the specified option refer to the primary location of the pain? For example, my primary pain is medial left. Is that the option that I should choose?
    • Jerry if you have pain on the inside of the left leg then you are going to choose the left medial.
Reviews (5)


DonJoy OA Reaction Web Knee

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If you are in pain, look no further, this DonJoy knee brace works.

Reviewed by:
i am suffering from osteoarthritis of the knee..and am gonna need surgery..but am unable to get it done now..had spent some dollars on many, many knee braces, getting next to no relief, we breed, train and show cutting horses, so i ride and ride and ride..every day..this brace has enabled me to do everything I want to do, with little to no discomfort..makes my days way more pleasurable...mahalo!! Wish i found this sooner...
Posted on October 3, 2015

A Saving Grace Knee Brace

Reviewed by:
I am a recreational downhill skier, and have been experiencing more and more difficulty skiing over the past 5 years due to the progressive osteoarthritis of the medial region of both my knees. This stems from the medial meniscectomies I had nearly 25 years ago - very little cartilage left in that area. Had to use steroid injections into both knees, anti-inflammatory drugs and icing in order to remain on the slopes. Last winter, I discovered the Donjoy OA Web Knee brace, which enabled me to ski nearly "pain-free" for 3 consecutive days, with rest needed on the 4th day. Without these braces, I couldn't have made it down the mountain for more than a half-day - too much pain. The OA Web Knee brace nicely unloads the medial part of my knees - a true savings grace. Highly recommended.
Posted on July 25, 2015

Awesome brace

Reviewed by:
I have a patella femoral syndrome, subluxation of the knee cap, and a maltracking of my knee cap. I have tried numerous knee braces, and never found one. Until know, this knee brace allows me full mobility of my knee and I don't feel like i'm constantly having to adjust the brace like many others. I most definitely recommend anyone with knee pain to use the reaction knee brace!
Posted on July 17, 2015

Product Specialist and Customer Service Experience...

Reviewed by:
This is to address primarily the Product Specialist and Customer Service experience I've had with Better Braces and DJO. These folks are knowledgeable, patient, and genuinely desirous of making the best of both you purchase and addressing your needs. While I'm very knowledgable on topics of lateral vs medial, offloading and compartment expansion, these folks are there to help you. If you are in anyway daunted by the measuring out of which brace and which side/option to order, **CALL THEM**! They want to get it right the first time as bad as you do and will help you do that. Shipments that are free over $50 dollars don't go out USPS Ground either like waiting for pencil erasers to ship from Hong Kong, they ship FedEx and provide you the tracking data as a rule, not an exception. I highly recommend these folks for your brace, compassion, and cryogenic needs. Begin by creating a profile (simple email and password) first and the give them a call, you won't be let down. In today's world of commerce, customer service is the most important issue to me.... Get that and I'll vote with my hard earned dollar..... Better Braces and DJO get that vote!
Posted on July 16, 2015


Reviewed by:
I have osteoarthritis and bone on bone I need a knee replacement but because I am so young my doctor wants me to put it off as long as I can. I have spent several hundred dollars in knee braces trying to find one that will help me. As soon as I put this brace on I knew it was the one for me. It gave me the support that I needed and was looking for. I am a letter carrier so I walk 8-10 miles a day this brace has helped a great deal thank you
Posted on January 8, 2015

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