Short Description
DISCONTINUED PRODUCT - See Related Products below for a recommended manufacturer substitution. Donjoy's SERF Strap is a unique patellofemoral brace that helps alleviate patellofemoral pain (PFP) caused by hip internal rotation, adduction, and/or knee valgus
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The Donjoy SERF Strap is a patellofemoral brace designed to alleviate patellofemoral pain caused by abnormal hip motion(s). The unique 3-point hip-leg anchor design alleviates patellofemoral pain caused by excessive hip internal rotation, adduction, and/or knee valgus. The Donjoy SERF patellofemoral strap may be used to control abnormal hip motion during leisure/sport activities or as a training exercise tool. It's lightweight and made from breathable Breath-O-Prene for comfort and easy concealing underneath clothing.
Donjoy SERF Strap Features:
- Provides Stability thru External Rotation of the Femur.
- Suited for patellofemoral or anterior knee pain resulting from excessive hip internal rotation, adduction and/or knee valgus.
- Controls abnormal hip motion during leisure/sport activities.
- 3-Point hip-leg anchor design made from thin Breath-O-Prene.
- Low-profile design for reduced migration.
- Application markers for easy re-application.
- 6-month warranty.
Download Instructions
Sizing Chart:
Measure according to height and weight
Customers reviews and questions

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Helps my knee
The strap was recommended by both my friend who's a doctor and my PT. It really does actually help and my knee feels better the more that I use it. Received my order from DME-Direct in just a couple of days which was fantastic. I saw my PT yesterday and he suggested to keep using the SERF strap until my knee is 100% better.
Delivery arrived in two days
Thank you for recommending the product. My order arrived a day ahead of schedule. Much appreciated.
My therapist recommended this to me..
My therapist recommended this to me for my patella tracking laterally. Thank you!
Good price, great service
Price was good and the shipping was fast.
Helped my knee
I tried 3 other braces for my knee and none of them helped until I tried this.
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Donjoy believes that the best way for you to select and purchase a Donjoy product is at one of its authorized online stores of which DME-Direct is one. Only in these stores can you be sure to find the latest Donjoy collection and ensure you are getting a genuine Donjoy product with the manufacturer's full warranty.
Donjoy therefore recommends that you do not purchase a Donjoy item through any website, unless it is an authorized Donjoy dealer.
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