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Bionic Knee Brace

DonJoy Performance

Lock in stability, dominate every move. Polycentric hinges with hyperextension stops + anti-migration wrap-around fit means this brace locks you tight through every jump, cut, and sprint Breathable neoprene, stretch-web closures, stash pocket and reflectivity keep you agile, comfortable, and game-ready—day or night

The Bionic Knee Brace can be used to treat or prevent the following knee injuries:

  • MCL and LCL Instabilities
  • Knee Hyperextension
  • General Meniscus Support
Only %1 left
SKU
DP151KB04-X
Special Price $77.99 Regular Price $86.99
On Sale 10% Off Save $9.00
DonJoy Performance Knee

Find the Right Fit:

  1. Stand with feet shoulder-width apart, knees slightly bent, leg muscles gently flexed.
  2. Place measuring tape flat against the skin (not tight). Measure leg circumference at:
    • 6 inches above kneecap
    • Center of kneecap
    • 6 inches below kneecap
  3. Use chart to find your size. If you land between sizes—or if thigh and calf measurements suggest different sizes—choose the larger option.

A correctly sized brace will feel comfortably snug and supportive without being excessively tight.

Size Thigh Knee Center Calf
S 15.5"-18.5" (39-47cm) 13"-14" (33-36cm) 12"-14" (30-36cm)
M 18.5"-21" (47-53cm) 14"-15" (36-38cm) 14"-16" (36-41cm)
L 21"-23.5" (53-60cm) 15"-17" (38-43cm) 16"-18" (41-46cm)
XL 23.5"-26.5" (60-67cm) 17"-19" (43-48cm) 18"-20" (46-51cm)

Attention Medicare Patients

Features & Benefits:

Polycentric Hinge Support
Soft hinges on both sides come with stops to help prevent hyperextension and support knee instability with lateral and medial protection
Precision Fit & Ease-of-use
Wraparound design with stretch webbing closure comes with easy-to-use pull tabs for personalized fit and adjustment
Stash pocket
Small stash pocket on backside allows you to carry your keys or cards as you go on your workout
Breathable
Designed with perforated neoprene for breathability
Won’t slip
Designed with anti-migration technology to help prevent your brace from slipping. No more stopping to pull up the brace after every step or jump.
Reflective
Stay safer with reflective spots built in so that you are visible in low light conditions: night running, late-nights on the basketball court, or even evening games out in the field.

Is the Bionic Knee Brace for me?

The Bionic Knee Brace is ideal for athletes looking for MCL and LCL support. It is not an ACL brace. It can also help with hyperextended knee injuries and meniscus support and works well for sports. Still not sure? Try our Brace Advisor for personalized product recommendations to meet your needs!

DonJoy Advantage Figure 8 Ankle Support

Designed to treat and protect:

  • MCL or LCL Instabilities
  • Knee Hyperextension
  • General Meniscus Support

Best for:

  • Basketball
  • Baseball
  • Hockey
  • Soccer
  • Volleyball
  • Running
  • Weightlifting

Our DONJOY Performance Bionic knee brace comes from one of the top bracing brands in the world, DONJOY. The Bionic line of bracing offers the highest level of support in our DONJOY Performance line of products. It offers bilateral polycentric hinges to help protect against lateral forces as you run, cut, and jump left and right. The hinges work by absorbing energy and impact as you move so that you can move freely and without restriction. Use the Bionic to help you continue your activities as you are recovering from injury and stay in the game.

View all DonJoy Performance braces or our full selection of knee braces.

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Product Questions

I'm a polio patient (1952) have a hyper extended knee due to loss of muscle mass back of lower leg. I need a stop to allow me to put weight on my leg and not have it lock in a hyper extended condition. Brace migration is an issue with loss of muscle condition. I feel I need a moderate to high support brace. Any help on recommending a brace.
Question by: Frank on Jul 13, 2016, 5:30 PM
The DonJoy Performance Bionic Knee Brace has a hard stop built into it to prevent hyperextension, and support knee instability with lateral and medial protection.
Answer by: Admin on Jul 13, 2016, 5:30 PM
should measurements be taken while in a relaxed seated position on a table or with knee flexed slightly? measurements are different and fluctuates between ordering a large or XL brace
Question by: jeff on Aug 20, 2016, 6:50 AM
For measurements, stand with your legs shoulder-width apart, legs slightly bent and leg muscles contracted. Measure up six inches from the center of your knee with a tape measure. Measure the circumference of your thigh at the 6-inch mark. Then measure down six inches from the center of your knee with a tape measure. Then measure the circumference of your calf at the 6-inch mark.
Answer by: Admin on Aug 20, 2016, 6:50 AM
Let me know whether I can wear the Bionic Knee Brace under the pants?
Thanks. Peter
Question by: Peter on Aug 17, 2016, 8:10 AM
The DonJoy Performance Bionic Knee Brace is a low profile brace but it does have protective hinges. You can wear the brace under pants as long as the pants have enough leg room to accommodate the brace.
Answer by: Admin on Aug 17, 2016, 8:10 AM
I wear the Don Joy armor knee brace for my torn ACL. And it slips and slides and is very un comfortable. Would this be good to wear for more comfort?
Question by: Hunter waggener on Mar 20, 2016, 3:08 PM
The Bionic Knee does not provide ACL specific support. For ACL support we recommend the Bionic Fullstop Knee Brace https://www.donjoystore.com/bionic-fullstop-knee-brace
Answer by: Admin on Mar 20, 2016, 3:08 PM
I recently tore my MCL, PCL and my miniscus in my left knee. Dr is going to clean up my miniscus orthoscopically, no major surgery being done and would like to know what knee brace best suits me for daily use. I work outside with normal bending during the day.
Question by: SB on Oct 13, 2015, 8:00 AM
The Playmaker would be a good choice. The brace will provide good general support for all of those injuries. https://www.donjoystore.com/donjoy-playmaker-ii-knee-brace
Answer by: Admin on Oct 13, 2015, 8:00 AM
DonJoy Performance Knee

Find the Right Fit:

  1. Stand with feet shoulder-width apart, knees slightly bent, leg muscles gently flexed.
  2. Place measuring tape flat against the skin (not tight). Measure leg circumference at:
    • 6 inches above kneecap
    • Center of kneecap
    • 6 inches below kneecap
  3. Use chart to find your size. If you land between sizes—or if thigh and calf measurements suggest different sizes—choose the larger option.

A correctly sized brace will feel comfortably snug and supportive without being excessively tight.

Size Thigh Knee Center Calf
S 15.5"-18.5" (39-47cm) 13"-14" (33-36cm) 12"-14" (30-36cm)
M 18.5"-21" (47-53cm) 14"-15" (36-38cm) 14"-16" (36-41cm)
L 21"-23.5" (53-60cm) 15"-17" (38-43cm) 16"-18" (41-46cm)
XL 23.5"-26.5" (60-67cm) 17"-19" (43-48cm) 18"-20" (46-51cm)
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