OA FullForce Knee Brace


Attention Medicare Patients

Provides a snug comfortable & functional fit.
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Is the OA FullForce Brace right for me?

Ideal for active individuals recovering from a ligament strain. Try our Brace Advisor for personalized product recommendations to meet your needs!

More Miles, Less Pain

The DonJoy OA FullForce off-loads the affected compartment of the knee while reducing ligament strain.

  • 3-Point Off-Loading mechanically shifts the painful joint loads from the degenerative compartment to the healthy compartment, while the hinge allows the ability to fine-tune the load.
  • 4-Points-of-Leverage is clinically shown to reduce ACL strain by keeping the knee in a stable position to minimize further cartilage damage.

What is Osteoarthritis (OA)?

Arthritis refers to more than 100 diseases that affect the joints and their surrounding tissues. Osteoarthritis, or OA, is the most common form of arthritis. The statistics on OA are staggering:

  • Nearly 21 million people in the United States have OA*
  • The incidence of OA is expected to increase even more as the U.S. population ages*
  • Over 7 million Americans are limited in their ability to participate in their main daily activities because of their arthritis*

The joint most often affected by osteoarthritis is the knee. Knee OA is caused by the degeneration or breakdown of articular cartilage that covers the ends of the bones that meet at the joint. Cartilage serves as a cushion between the bones, providing a smooth surface for the bones to move against each other. When the cartilage deteriorates the bones may actually be rubbing together. Your physician will often refer to this as “bone-on-bone” osteoarthritis.

*Arthritis Foundation

What is Osteoarthritis (OA) knee bracing and how does it work?

Knee braces are available that are specifically designed to treat OA. They stabilize the joint, help reduce pain and help to build stronger muscles, which allows patients to return to the activities they love. Load redistribution and joint alignment Through a process called “off-loading” or shifting, OA braces helps relieve pain by redistributing the weight bearing load on the painful or affected compartment of the joint to the healthy or unaffected compartment.

What to expect from a Osteoarthritis (OA) knee brace

  • Braces cannot cure OA and may not be right for everyone. However, it is a viable solution for many people. The ideal candidates are typically active people who are motivated to strengthen their muscles and willing to wear a brace to realize the benefits of this form of treatment.
  • Discuss treatment goals with your doctor and others on your health care team before you get a brace.
  • Don’t expect a brace to feel good from the start. It may take from a week to a month to get used to how the brace feels on your leg. Be patient. It took a long time for your knee OA to develop.

***NOTE: This item can take up to 2 weeks to ship***

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Product Questions

My measurements are 20.5 thigh, 17 knee and 15.5 calf. the calf and thigh are within the medium range, but the knee is in the large range. Which size will work?
Question by: Chris on Jul 28, 2016, 2:40 PM
Based of the measurement we would go with the medium as the swelling might go down on the knee.
Answer by: Admin on Jul 28, 2016, 2:40 PM
I have been wearing this brace for about 6 months and it is wonderful. My wife and I enjoy a trip to the beach each summer and I'm concerned about what effect, if any, the salt water and sand may have on this brace. Will the brace be okay if I rinse it well with fresh water (ie. - hose it off) each evening after we return from the beach?
Question by: Keith on Apr 26, 2012, 8:38 AM
Yes, definitely rinse off the brace with fresh water. Make sure to get into the hinges too, to get all the sand out. Let it dry and re-lubricate the hinges with a dry, teflon based lubricant. Most bicycle chain lubricants fit this description.
Answer by: Admin on Apr 26, 2012, 8:38 AM
I have this knee injury according to MRI report

1. Grade I injury of lateral collateral ligament
2. Grade II tear of posterior horn of lateral meniscus.

Can you kindly suggest a brace so that i can start playing football please.

waiting for your reply

Question by: ali on Oct 5, 2013, 10:49 AM
Thank you for contacting product support. DonJoy OA Full Force Knee Brace a great brace for you. It is lightweight and provides stability to the ligaments of the knee and you can get it to off-load the lateral side where your lateral meniscus tear is. If you have any other questions please do not heitate to contact us
Answer by: Admin on Oct 5, 2013, 10:49 AM
I bought the Don Joy Fullforce three weeks ago. I am not sure its the right size. I used the chart and checked it twice. I bought ght size it noted. But the positionjof the pads on the sides seems a bit lower, more towards the lower part of the knee (towards the foot) rather than centered. Is this correct? Or do I possibly need one size larger?

Question by: George Alexander on Oct 9, 2013, 1:11 PM
Thank you for contacting product support. It is possible that you are not putting the brace on correctly. The middle of the condyle pads should line up with the top of your kneecap. If you followed the sizing instructions on the BetterBraces website and measured six inches above and below the knee cap and took your knee circumference then you should have the correct size. Here is a fitting video that you can use to make sure that you are putting the brace on correctly.
If the thigh cuff feels too tight it is malleable so you can pull it out a little as well.
Answer by: Admin on Oct 9, 2013, 1:11 PM
I have osteoarthritis diagnosed after MRI. my ligaments are in good shape. I've been doing most of the exercises listed here since I first started w the pain late last year. I had fluid drained late November followed by a cortisone shot and another cortisone shot in December w minimal relief. I am on anti inflammatory meds (Tylenol Arthritis, ibuprofen and turmeric) and take a glucosamine/chondritin/MSM supplement and fish oil. The pain is localized to my inner knee. From reading the info here and the comments, I'm already doing a lot of it. I am also working on losing weight which I know will help.

Can you suggest a a good knee brace that will allow me to continue umpiring fast pitch softball which requires squatting and squats to running? I do not want to give it up and my "teams" don't want me to either. Also, do you work with insurance?
Question by: cindi on Mar 23, 2014, 3:55 PM
The DonJoy FullForce OA brace would be a good choice for you. You would want to get the medial compartment unloader for your knee and it will allow you to still do your umping. To get your insurance to cover this you will need a prescription from your physician and will need to go through either our insurnace department at 800-548-3370 or contact your local DJO sales rep by going to and looking up a rep
Answer by: Admin on Mar 23, 2014, 3:55 PM

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.

    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.