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New DonJoy Defiance Pro OA Custom Knee Brace

The undisputed market leader.

DonJoy’s Defiance has been the world’s leading custom knee brace for over 20 years. Over 2 million Defiance braces have been prescribed to elite professional athletes, middle-school soccer players, and athletes of all shapes, sizes, ages and genders.

Now, Defiance PRO pushes our dominance even farther, boasting the greatest strength-to-weight ratio of any knee brace on the market.
Professional athletes choose Defiance PRO for the ultimate confidence and freedom to move.

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New DonJoy Defiance Pro OA

The undisputed market leader.

DonJoy’s Defiance has been the world’s leading custom knee brace for over 20 years. Over 2 million Defiance braces have been prescribed to elite professional athletes, middle-school soccer players, and athletes of all shapes, sizes, ages and genders.

Now, Defiance PRO pushes our dominance even farther, boasting the greatest strength-to-weight ratio of any knee brace on the market.
Professional athletes choose Defiance PRO for the ultimate confidence and freedom to move.

Our Technology Drives Us Ahead of the Competition

Features and Benefits 

  • 1° to 7° of correction built into a strong, lightweight, carbon composite frame 
  • Telescoping hinge (up to 3° of additional correction) shifts compressive knee joint forces from the degenerative area to the healthy compartment 
  • Universal OA Key enables patient-controlled load adjustments to meet daily needs 
  • Custom color options Over 30 different colors and patterns available
  • Less than 600g! Custom carbon fiber frame is built tough
  • New C-6 liner material Soft to the touch, moisture wicking, and anti-microbial
  • New low-profile design The trusted high-performance carbon fiber frame now lighter and 5 mm lower profile than Defiance Classic
  • New silicone condyle pads Comfortable help keep the brace in place
  • Memory foam condyle pads Contour to the knee
  • Swiveling internally mounted straps Intimate fit around the anatomy for a lighter, more comfortable feel and improved anti-migration
  • New soft touch strap ends Flexible and strong hold keeps straps secure
  • Wide range of accessories available

Adjustable Unloading Hinge

The custom OA frame offers 1 to 7 degrees of off-load. The telescoping hinge helps provide additional off-loading up to 3 degrees. The memory foam condyle pads are included for increased patient comfort and compliance.



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The Defiance Pro OA is custom made and requires measurements that are taken by either using the CCMI Mark III. Read more about our Custom Knee brace options, advice, and expert fitting.

SIZE: Custom, Please Contact
Minimum 12 1/2" (31.8cm), 10 1/4" (26cm)
Maximum30 5/8" (77.8cm), 20 3/4" (52.7cm)

OrthoMed Policies are the Best In The Industry!

Fast Shipping, 30 Day Money Back on most items, and Easy Returns. Please note, some Exclusions and Conditions Apply for certain products. For full policy details, including exclusions and conditions: View Our Shipping Options and Policies

5 year warranty on frame and hinges. 6 month warranty on all soft components, straps, pads and covers.

Product Features:

  • Custom color options Over 30 different colors and patterns available
  • Less than 600g! Custom carbon fiber frame is built tough
  • New C-6 liner material Soft to the touch, moisture wicking, and anti-microbial
  • New low-profile design The trusted high-performance carbon fiber frame now lighter and 5 mm lower profile than Defiance Classic
  • New silicone condyle pads Comfortable help keep the brace in place
  • Memory foam condyle pads Contour to the knee
  • Swiveling internally mounted straps Intimate fit around the anatomy for a lighter, more comfortable feel and improved anti-migration
  • New soft touch strap ends Flexible and strong hold keeps straps secure
  • Wide range of accessories available