Defiance III Custom Knee Brace


Attention Medicare Patients

Customized ligament protection for your knee. Ideal for athletes who participate in contact sports and want to prevent a knee ligament injury or re-injury.
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Is the Defiance Custom Brace for me?

Ideal for athletes participating in high collision sports and want complete ACL and ligament protection. Try our Brace Advisor for personalized product recommendations to meet your needs!

Designed to help treat and protect:

  • Moderate to severe ACL or PCL instabilities
  • Post ACL or PCL reconstructions
  • ACL / PCL combined instabilities (CI)
  • MCL / LCL instabilities
  • Hyperextension

Best for:

  • Football
  • Motocross
  • Skiing
  • Surfing
  • Wakeboarding

Our top Custom-Made Knee Brace

The Defiance III is one of our strongest knee braces by DonJoy and is recommended for athletes participating in high collision sports, like football, motocrosses, or skiing. The DonJoy Defiance III Knee Brace is one of our top custom knee braces. This brace is also ideal for athletes who participate in water sports like surfing, wakeboarding, or kite surfing. People recovering from ACL and other knee ligament surgeries also use this brace on regular basis. If you are involved in non-contact sports, require a lightweight brace to maximize speed, or want a custom brace for everyday wear we recommend the DonJoy A22 custom knee brace.

We will contact you after you purchase this brace to schedule a fitting appointment. You will also then be able to select your color. View colors available.

Why do I need a custom knee brace?

Wearing a custom knee brace means support is applied where you need it most. When you order a DonJoy Defiance III knee brace, one of the DonJoy bracing experts will come to your house or office to take your measurements. Then DonJoy will custom manufacture a brace that fits your exact measurements. This perfect fit ensures the components of the brace align perfectly with your body ensuring maximum protection and comfort during movement. By wearing a brace that is custom manufactured for your knee, you can play your sport with confidence because you know that you’re less likely to re-injure your knee.

The Defiance III knee braces are used to support or help prevent the following injuries

  • Moderate to severe ACL or PCL instabilities
  • Post ACL or PCL reconstructions
  • ACL / PCL combined instabilities (CI)
  • MCL / LCL instabilities
  • Hyperextension

Product Features…and the benefits you’ll experience!

Custom Fabricated Based on Your Measurements
The brace is manufactured to your exact measurements, which means the components of the brace align perfectly with your body ensuring support, protection and comfort during movement.
Available in 3 Lengths
The DonJoy Defiance is available in 3 lengths: standard, short, and a short calf version for ski boot clearance.
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 exactly how the Four-Points of Leverage works.
LowPro 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.
Carbon Fiber Frame
This brace is both unbelievably strong and lightweight. You get the protection you need without feeling like you’re being weighed down by your brace.
Anti-migration Supra Condyle Pad
Your knee brace will stay in place no matter how active you are.
Swiveling Strap Tabs
These tabs enable the brace to move with you.
Product Guarantee
This knee brace comes with a lifetime warranty on the frame and hinges, and a 6 month warranty on the soft goods.

Sizing and Measurements

When you order a DonJoy Defiance III knee brace, it will be custom fitted by one of the DonJoy bracing experts in your local area. Upon placing your order, your local expert will contact you to schedule the appointment to take your custom measurements. Please allow up to 5 business days to be contacted. Your brace will be delivered within a week from the date your measurements are taken.

Instructions for Use…how to put on your DonJoy Defiance III 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 Defiance replacement parts for kits, undersleeves, straps and pads.

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

*** Please Note***

Because the DonJoy Defiance is custom fitted and sized for your knee, this product does not qualify for the regular BetterBraces 30 Day Money Back Guarantee or other general returns. Remakes will be done for any manufacturing defects free of charge. Rest assured that DonJoy will work with you to make sure you get a satisfactory and comfortable fitting brace.

Attention Hawaii Customers: For those residents of the outer islands other than Oahu, you may be required to visit your local Ortho Clinic to be measured for the brace at your own expense. Or you can be placed on a wait list to meet with one of our Reps that will be flying to your island (lead times will vary and can change).

The DonJoy Defiance is not available outside the United State via If you are outside the U.S. please email us and we will direct you to the proper outlet in your country.

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Product Questions

Do you need a prescription?
Question by: Jason on May 19, 2010, 2:47 PM
No, you do not need a prescription to order the Defiance. You can place the order online and once it has been ordered, a DonJoy Sales Representative in your area will contact you to schedule an appointment to be measured for the brace.
Answer by: Admin on May 19, 2010, 2:47 PM
Is a custom fit brace good for a 16 year old boy that is still growing?
Question by: scott on Jul 31, 2010, 10:44 PM
The DonJoy Defiance III Custom Knee Brace is ideal for a growing patient. First of all, you'll get a size change remake within 4 months, free of charge. Secondly when the patient does grow beyond the brace measurements, a remake will cost significantly less than ordering another off the shelf brace.
Answer by: Admin on Jul 31, 2010, 10:44 PM
I am a Wide Receiver and Outfielder who has had 2 acl reconstructions on my right knee, I was curious as to what brace you think would be best for me? I am looking for a light weight brace that will give me maximum stability and protection of my acl, while not sacrificing any speed. I guess I have narrowed it down to either the Full Force or the Custom Defiance (unless you recommend something else), but I'm curious as to how much the Defiance weighs. Also another concern is I am 7 months post op, so I am just now starting to lift heavy in my legs again, because of this I'm concerned about outgrowing the brace. Would gains from weight lifting be enough to cause a need for a change in size in the braces that are not custom fitted, based on the intervals of measurement and sizing? With all this being said please let me know what you recommend. Lastly, I was wondering if there is any location near Charlotte, NC that I could actually go and try these on and see for myself. Please let me know! Thanks,

Question by: Zach on Sep 18, 2010, 1:44 PM
The Defiance weighs approx 20 ounces, while the Full Force weighs 22 ounces.

The Defiance can be remade to new measurements within 4 months of the brace's manufacture date, after that it can be remade at a lower price.

At this time we are a retail website only, with no physical retail location.
Answer by: Admin on Sep 18, 2010, 1:44 PM
Does the DonJoy Defiance provide a distraction (separation ) of the knee joint, for use on osteoarthritis knee pain?
Question by: David 808 on Jun 17, 2015, 7:28 PM
The DonJoy Defiance has the option to get the OA hinge. The bilateral hinge bars offers support for ligament instabilities and work in along with the telescoping condyle pad which gives you the ability to control the amount of offload in the brace, to provide relief for your osteoarthritis. When you are being measured for the brace by the DJO Sales Rep they will go over your injury and help to determine if this option is best suited for your needs,
Answer by: Admin on Jun 17, 2015, 7:28 PM
How adjustable is this brace? Will it allow for growth in the leg both vertically and horizontally? If it will how much will it allow before you need a new brace?
Question by: Alex G on Jan 4, 2016, 5:57 PM
The Defiance is custom made for your knee size as it is and you have 4 months to get one free re-make for girth changes. After 4 months there is a charge for a re-make.
Answer by: Admin on Jan 4, 2016, 5:57 PM
One Size.