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Description
The DonJoy OA Reaction Web Knee Brace is a clinically proven, low-profile solution for knee osteoarthritis (OA) pain. Its patented silicone web technology actively absorbs shock and gently off-loads the painful compartment of the knee — so you can walk, run, golf, and live without the constant reminder that your knee hurts. The open-framework design breathes, stays put, and disappears under clothing. An undersleeve is included.
⚠️ Which Version Do I Need? (Read Before Ordering)
This brace comes in two versions based on where your pain is located. Choosing the wrong version will not provide relief. Use this guide:
Your Knee & Pain Location
Version to Select
SKU Series
🦵 Left Knee — Inner (medial) pain
Right Medial / Left Lateral
11-7426
🦵 Left Knee — Outer (lateral) pain
Right Lateral / Left Medial
11-7427
🦵 Right Knee — Inner (medial) pain
Right Lateral / Left Medial
11-7427
🦵 Right Knee — Outer (lateral) pain
Right Medial / Left Lateral
11-7426
Rule of thumb: The hinge side goes on the painful compartment of the knee. The extra gel padding on the hinge side actively off-loads that area.
Is This Brace Right for My Condition?
Condition / Symptom
OA Reaction Web a Good Fit?
Mild to moderate unicompartmental osteoarthritis
✅ Yes — primary indication
Patellofemoral (kneecap) pain
✅ Yes — patella support included
Minor ligament instability / sprains
✅ Yes — mild support provided
Severe OA / bone-on-bone arthritis
⚠️ Consider a full OA unloader brace instead
ACL / PCL / MCL / LCL ligament tears
❌ Not designed for ligament reconstruction support
Post-surgical recovery
❌ Not a post-op brace — see ROM hinged braces
Not sure which brace is right for you? Call us at 800-580-9887 (M–F, 9:30 AM – 5 PM EST) and our team will help you choose.
Features & Benefits
Patented silicone web design provides shock absorption and mild compartment off-loading
Low-profile, lightweight silicone construction — wears easily under clothing
Four-point adjustable wraparound closure for easy on/off and custom fit
Soft silicone condyle pad anchors the brace and prevents migration
Breathable open framework promotes airflow and long-term compliance
Hinged design adds medial/lateral joint stability
Undersleeve included for added comfort against skin
Best for: walking, running, golf, tennis, cycling, and everyday activities
Indications for Use
Early to moderate stages of unicompartmental osteoarthritis of the knee and patellofemoral pain. Mild ligament and joint instabilities.
How to Measure for the Right Size
Measure your thigh circumference 6 inches above the center of your kneecap (mid-patella) using a flexible tape measure. Use that measurement to find your size in the chart below.
OrthoTape.com is an authorized DonJoy dealer. Every brace is sourced directly from the manufacturer — not a third-party reseller, not a knock-off. You get the real product, backed by our team. Questions? Call 800-580-9887 (M–F, 9:30 AM – 5 PM EST).
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5 stars: 9 (100%)
4 stars: 0 (0%)
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2 stars: 0 (0%)
1 star: 0 (0%)
G
Greg
Great fitting
Received fast and is helping my knee greatly.
A
Andrew Francetic
Don Joy brace
Awsome brace.First one lasted 6 months. Ortho Tape was easy to order.
G
Gregory Small
Great Service from OrthoTape
The brace was a replacement for an original that was worn out. So, I am fine with the product. This review is about the great service that I got from the seller. My order was filled quickly and I got the brace in just a few days.
D
Dwight Fuller
It Works
I have OA in both knees. Three knee surgeries and a lifetime of skiing contributed to my condition. The OA Reaction brace allows me to "unload" the pressure from the affected part of my knee joint and provides pain relief and support when OTC pain killers do not. Overall it is reasonably comfortable if you don't over do your activity.
L
Lawrence Stoyanowski
So far so good
I use them today golfing, and it seem to help with my knees, and I felt more supported and could walk downhill a lot easier.
G
Gina Schultheis
Reduces medial joint line pain and provides joint stability.
D
Dunn Wanda
This is the best knee brace I have had. Also have had the same one for my Rt knee for 3-4 years. They really help relieve the pain.
Not only can you swim and sweat, but its less itchy!
My son was devistated to break his arm and not be able to go swimming over the summer. But once he was switched from a long cast to a short cast and the doctor said he could have a waterproof one, we were ready with this product. Not only did it save our summer by allowing him to swim, he was also able to clean his cast out in the bath after an especially hot and sweaty soccer practice. However, drying the cast out is a pain in the butt.
But most importantly to me, he complained about being itchy far less and his skin looked completely clean and normal once the cast was removed, other than being pale. When his non-waterproof long cast was removed he had a nasty rash that wasnt medically concerning but made him very itchy and took a few days to clear.
