Defiance Knee Brace
Defiance Knee Brace
Defiance Knee Brace
Defiance Knee Brace


Knee Protection Program Knee Protection Program

The custom Defiance is DonJoy's flagship knee brace. With clinically-proven technology including the 4-Points-of-Leverage System™ plus innovative, high-tech materials and design, this lightweight brace provides durable support for moderate-to-severe ACL, PCL, MCL and LCL instabilities. Plus, the low-profile design fits comfortably underneath clothing and sports uniforms, including hockey and football. As the strongest of DonJoy's functional braces, the custom, carbon composite Defiance is recommended for high-collision sports, while its featherweight materials and custom fit also make it the brace of choice for activities of daily living. Available with the LoPro FourcePoint Hinge, the only hinge clinically-proven to protect the ACL. Defiance technology is on the field, on the court, on the slopes and in the water protecting knees and providing confidence to those who wear it. First introduced in 1992, DonJoy has produced more than a million braces.

Learn the facts about bracing for ACL treatment and prevention.

Indication: Hyperextension; Moderate to severe ACL or PCL Combined Instabilities (CI); ACL or PCL reconstruction; Prophylactic use

Ordering Information

  • Overview
  • Videos
  • Features & Benefits
  • Part Numbers
  • Documents
  • Testimonials

Defiance® Colors

Make it your own - 31 Different color choices

DonJoy Defiance Color Option - Black Gloss

Black Gloss


DonJoy Defiance Color Option - Black Matte

Black Matte


DonJoy Defiance Color Option - Metallic Black Gloss

Metallic Black Gloss


DonJoy Defiance Color Option - Metallic Gunmetal Gloss

Metallic Gunmetal Gloss


DonJoy Defiance Color Option - Metallic Silver Gloss

Metallic Silver Gloss


DonJoy Defiance Color Option - Smoke Matte

Smoke Matte


DonJoy Defiance Color Option - White Gloss

White Gloss


DonJoy Defiance Color Option - Metallic White Gloss

Metallic White Gloss


DonJoy Defiance Color Option - Bright Blue Gloss

Bright Blue Gloss


DonJoy Defiance Color Option - Navy Gloss

Navy Gloss


DonJoy Defiance Color Option - Metallic Navy Gloss

Metallic Navy Gloss


DonJoy Defiance Color Option - Metallic Bright Blue Gloss

Metallic Bright Blue Gloss


DonJoy Defiance Color Option - Powder Gloss

Powder Gloss


DonJoy Defiance Color Option - Seafoam Gloss

Seafoam Gloss


DonJoy Defiance Color Option - Emerald Gloss

Emerald Gloss


DonJoy Defiance Color Option - Metallic Forest Gloss

Metallic Forest Gloss


DonJoy Defiance Color Option - Metallic Gold Gloss

Metallic Gold Gloss


DonJoy Defiance Color Option - Volt Gloss

Volt Gloss


DonJoy Defiance Color Option - Bumble Gloss

Bumble Gloss


DonJoy Defiance Color Option - Safety Gloss

Safety Gloss


DonJoy Defiance Color Option - True Red Gloss

True Red Gloss


DonJoy Defiance Color Option - Metallic True Red Gloss

Metallic True Red Gloss


DonJoy Defiance Color Option - Fuscia Gloss

Fuscia Gloss


DonJoy Defiance Color Option - Cotton Candy Gloss

Cotton Candy Gloss


DonJoy Defiance Color Option - Crimson Gloss

Crimson Gloss


DonJoy Defiance Color Option - Grape Gloss

Grape Gloss


DonJoy Defiance Color Option - Velvet Gloss

Velvet Gloss


DonJoy Defiance Color Option - Olive Drap Gloss

Olive Drab Green Matte


DonJoy Defiance Color Option - Deset Tan Matte

Desert Tan Matte


DonJoy Defiance Color Option - Flat Dark Earth Matte

Flat Dark Earth Matte


DonJoy Defiance Color Option - Stars and Stripes Gloss

Stars Stripes Gloss


DonJoy Defiance Knee Brace Overview


Football Knee Braces


Knee Ligament Injuries


FourcePoint Technology


Motion is Medicine – Jennifer's Story


DonJoy Custom Knee Brace Measurement Guide


DonJoy Functional Knee Brace Fitting Guide


Why PFATS Trusts DonJoy


DJO’s Impact on Football


DonJoy Custom Bracing Revolutionizes the Game


DJO's Partnership with PFATS

  • Backed by DonJoy's Knee Guarantee Program™
  • Custom-made craftsmanship
  • Lifetime warranty on frame and hinges
  • Clinically-proven 4-Points-of-Leverage System™
  • Custom fabricated
  • Swooping Thigh Cuff for inner thigh clearance and bilateral brace use
  • Strong, lightweight carbon composite frame
  • ACL, PCL, or Combined Instability (CI) strap configurations
  • 24-hour turnaround time


  • Patented, clinically  proven FourcePoint™ hinge technology (stop kit not included)
  • Over 40 custom frame colors and graphics
  • Defiance Extra includes reinforced carbon composite frame
  • Metal Caps - PowerCaps, metal strap tab caps (recommended for contact sports)
  • High strength stainless steel gears (recommended for contact sports)
  • Standard Low Profile Hinge
  • DropLock Hinge

Ordering Information

Each Defiance is custom made.
Measurements taken with CCMI Mark III or casted in weight bearing.

Size Thigh Calf
Minimum 12.5" (31.8 cm) 10.25" (26 cm)
Maximum 38.125" (97 cm) 26.25" (66.5 cm)


Part Number Description Size
11-0075-x-00000 Lycra Suspension Sleeve S - XXL
11-0122-x Neoprene Suspension Sleeve XS - XXL
11-1006-x-06000 Impact Guard S - XXL
11-1367-9-06000 Calf Pinch Guard Universal
11-0398-9-00000 Full Extension Stop Universal
25-0422-0-00000 Flexion/Extension Stop Kit Universal
11-0103-x-06000 Sports Brace Cover (short) S - XXL
11-0016-x-06000 Sports Brace Cover (standard) S - XXL
n/a Slide Shield Universal
n/a Suede Strap Pad Kit Universal
n/a Suede Liner Kit Universal
n/a Chamois Strap Pad Kit Universal
n/a Chamois Liner Kit Universal
n/a Chamois Pneumatic Universal
11-0400-9-00000 Pneumatic Condyle Pad Universal
25-1923-0-06000 Air Condyle Kit Universal
25-1480-0-00000 Brace Bag Universal
11-1525-x Tru-Pull Advance Attachment XS - XXXL
11-1415 Sili-Grip Strap Pad Kit Universal
11-0543-x-06000 Neoprene Suspension Strap Kit 1 = XS, 2 = S/M, 3 = L/XL/XXL
11-0177-0-00000 Chamois Liner n/a
11-0757-x-06000 Chamois Strap Pads n/a


“Hi! My name is Emily, and I want to share with you my Donjoy story! I have a pretty unique story, and my Donjoy ACL braces play a vital role. Unlike sports such as soccer, basketball, volleyball, or skiing; my sport isn't one where your brand is yet represented by an athlete or even recognized. But nonetheless, I trust Donjoy's ACL braces to allow me to confidently continue in my favorite extreme sport in the whole world. Skydiving. Women make up only 13% of skydivers; I am one of those lucky few. I also overcame the odds of women with a multiple serious injury history who return to jump again. My injury history is pretty extensive. Prior to skydiving I had 4 ACL surgeries on my left knee. But during my first jump, I fell in love; literally FELL in love. Unfortunately my knees wouldn't love it as much. While landing my 11th jump I had my 5th ACL tear; this time on my right knee. I was devastated, because I knew from my prior 4 ACL tears what this meant. Another painful surgery, and another long stretch of frustrating rehab, and no skydiving. For someone as new in the sport as I was at the time, in addition to being a woman, no one expected me to return to the dropzone to skydive again. But I did. I kicked butt in therapy and 6 months later I received my bilateral pair of Donjoy ACL braces that my surgeon recommended if I insisted to continue skydiving. Nearly 400 jumps later I've earned an instructional rating in skydiving. I work as a coach at Jump Georgia Skydiving. I teach and train student skydivers, as well as being a mentor to new women entering our sport. I can't tell you how many times when visiting dropzones all over the country, that people have stopped me looking my legs to ask me for what I wear these 'bionic legs' and where I got them. That's where I share your brand most. I want to inspire people to not give up on something that makes them feel alive. To inspire courage, and banish defeat even after multiple injuries. That is what Donjoy has done for me. Helped me do what I love with confidence and banish defeat by not giving up simply out of fear that I could tear my ACL again for a 6th time. I don't jump without Donjoy, and I'd love to see your brand represented in my sport. Thanks for reading, and most of all thank you for keeping me in the sky! ”

~ Emily Brooks

“I tore my ACL last year during an 8th grade basketball game for my club team, The Panthers. A year later, I got my DonJoy knee brace and made both the JV and Varsity team at my high school as a freshman! My brace gives me the confidence and support I need to play my best game. I named my brace "Joy" and just like my rep told me, I can't imagine playing without her. I'm playing soccer in the Spring and know my brace will give me the extra confidence I need to make the varsity team! Thank you for making a brace that is both functional and comfortable. It's like second nature to wear it!”

~ Brooke Wohlers

“I just wanted to thank you all very much. I served four years in the USMC in the infantry, and I completed 2 combat tours (Iraq and Afghanistan.) While in Afghanistan our constant patrols and strenuous missions took a tool on my knee. I got out in 2011 and the VA was quick to operate on my knee. However, it only made my pain worse. I've suffered with severe pain and limited activity for 3 years. I'm thankful to now be able to keep up with my children and their active lifestyles. My family and I thank you for your great product (I've been through enough to know a great one when I find one.) Semper Fi.”

~ Alex Sitorius

“DonJoy has provided relief and stability for me for over a decade now, and I can honestly say it is the best product on the market and the quality is superior. My DonJoy knee brace and I were inseparable after five knee surgeries to repair ACL and meniscus tears during my high school years. While these injuries shattered my dreams of playing collegiate and pro basketball, my faith in God and my determination to rehab properly, which included the use of my DonJoy brace, allowed me to continue to play the game I love throughout most of my high school years. God had other plans for my life, and I am living proof, at the age of 32, that you can overcome obstacles and come out stronger than you ever imagined possible. My advice to any one going through serious injuries and orthopedic surgeries is to pay attention to your body and err on the side of caution, regardless of the varying opinions you will receive from your medical team. My advice comes from experience, as my second ACL and meniscus tear came halfway through the basketball season when I felt I was getting stronger and competing at almost 100 percent. I made a decision to not wear my DonJoy brace in a game and sustained the injury, resulting in more surgery and rehab. Suffice it to say, I wore my DonJoy brace after the fifth surgery and still rely on their products to this day. While I no longer need the ACL brace, I will always have a DonJoy sleeve or other DonJoy product for stabilization and peace of mind. My knees are stronger now than in my early twenties. In fact, I am an avid runner and enjoy competitive running. Also, I never miss an opportunity to play a pick up game of basketball with friends. Prior to becoming sold on DonJoy, I tried another brace and there is honestly no comparison in the quality and stability the DonJoy product affords the user. The saying, you get what you pay for can truly be applied in my opinion of this other product. Spare no expense when it comes to a product like DonJoy that can give you your functionality back after a serious knee injury and provide you the quality of life that you deserve. My advice to all, whether you are a trained athlete or a weekend warrior, is to be smart and listen to your body. This is advice learned after pushing my limits. As an athlete, there is a fine line between pushing through the pain and taking care of an injury that could potentially define you for the rest of your life. DonJoy products work. Anyone ready for a run or a game of hoops? ”

~ K.K. (Ketch) Willis

“I've had my DonJoy for about 10 years due to some medial meniscus issues. It has always brought immediate relief as soon as I put it on but I learned just how strong it was this week when I fell off a scooter while wearing my brace in Panama. I was wearing my brace as I always do on long-walking days (thankfully) and as I crashed into my left leg, the one with the DonJoy, the brace almost completely protected my entire leg of injury. I have one scratch on the part of my knee that wasn't covered but that's it! Now I know this isn't the purpose of the brace, but not only did it break my fall, protect my leg, it also didn't break. I’ve worn it every day since and have a whole new appreciation for the brace. 10 years old, 1 scooter crash, and it's as great as the day I got it, other than some new, gnarly scratches. Cannot recommend this brace more.”

~ Alissa Heim