Works as anticipated, good product that solves many problems.
Easy process to order efficient shipping ,good communication .
High quality knee brace.
Great service, quick delivery. Allowed me to stay in water on family summer vacation.
Description
DonJoy OA Reaction Web Knee Brace for Osteoarthritis Pain
The DonJoy OA Reaction Web Knee Brace is a lightweight, low-profile osteoarthritis knee brace designed to provide comfortable support and targeted off-loading for people with mild to moderate unicompartmental knee osteoarthritis. Its patented silicone web helps absorb shock and support the kneecap, while the off-loading hinge with silicone pad helps reduce pressure on the affected compartment of the knee.
The breathable open-web design provides a comfortable, non-slip fit without the bulk of many traditional rigid OA braces. It can be worn discreetly under many types of clothing, and a matching DonJoy undersleeve is included for optional additional comfort.
💰 Save vs. Your Doctor's Office
This product is HSA/FSA eligible. If you have a high durable medical equipment (DME) deductible, your out-of-pocket cost may be lower when purchasing the brace directly. Learn more ↓
Choose the Correct Knee and Pain Location
This brace is not selected by right or left knee alone. Choose the configuration according to both the affected knee and whether the osteoarthritis pain is on the inner or outer side of that knee.
Medial = INNER side of the knee, toward your other knee.
Lateral = OUTER side of the knee, away from your other knee.
| Affected Knee | Pain Location | Select This Configuration |
|---|---|---|
| RIGHT Knee | INNER / Medial | Right Medial / Left Lateral |
| RIGHT Knee | OUTER / Lateral | Right Lateral / Left Medial |
| LEFT Knee | INNER / Medial | Right Lateral / Left Medial |
| LEFT Knee | OUTER / Lateral | Right Medial / Left Lateral |
Examples:
- Right knee pain on the inside → select Right Medial / Left Lateral.
- Right knee pain on the outside → select Right Lateral / Left Medial.
- Left knee pain on the inside → select Right Lateral / Left Medial.
- Left knee pain on the outside → select Right Medial / Left Lateral.
Important: Choosing the wrong compartment configuration can prevent the brace from off-loading the intended side of the knee. If you are unsure which configuration applies to your condition, review the table above before ordering.
What Is the DonJoy OA Reaction Web Designed For?
The DonJoy OA Reaction Web is designed to help reduce osteoarthritis knee pain by off-loading the affected joint compartment. Current DonJoy/Enovis instructions indicate the brace for mild to moderate unicompartmental osteoarthritis of the knee and patella.
The OA Reaction Web combines a lightweight silicone web with a single off-loading hinge, providing a lower-profile alternative for people who want targeted osteoarthritis knee support without the bulk of a traditional rigid OA brace.
Features and Benefits
- Patented silicone web technology helps provide shock absorption and anterior knee support
- Targeted compartment off-loading for medial or lateral knee osteoarthritis
- Off-loading hinge with silicone pad positioned at the knee joint
- Four-way adjustable wraparound design creates a comfortable, form-fitting fit
- Integrated silicone web provides a comfortable, non-slip cup effect around the knee
- Breathable open framework promotes airflow and reduces bulk
- Low-profile construction can be worn discreetly under many types of clothing
- DonJoy undersleeve included for optional additional comfort
- Not made with natural rubber latex
- Designed for everyday and mild activities such as walking, golf, hiking, jogging and tennis
Why Buy the DonJoy OA Reaction Web from OrthoTape.com?
- ✅ Authorized DonJoy / Enovis Dealer — genuine manufacturer product
- ✅ Guaranteed Fresh Stock — sourced through authorized distribution
- ✅ Knowledgeable Product Support — help choosing the correct size and OA configuration
- ✅ 6-Month Manufacturer Warranty — covers qualifying defects in materials or workmanship
- ✅ HSA/FSA Eligible — use eligible pre-tax healthcare funds
DonJoy OA Reaction Web Size Chart & Measuring Guide
Enovis uses thigh circumference measured 6 inches above the center of the kneecap (mid-patella) as the primary ordering measurement for the OA Reaction Web. For a more complete fit check, also measure directly around the center of your knee and around your calf 6 inches below the kneecap.
Important Fit Check Before Ordering
Do not rely on the thigh measurement alone if your knee or calf measurement falls into a larger size. The brace must have enough room for the silicone web to center around the kneecap and for the off-loading hinge to sit at the center of the knee joint. If you are between sizes or exactly on a size boundary, select the next larger size for optimum comfort and fit.
How to Measure for the DonJoy OA Reaction Web
- Stand with your feet about shoulder-width apart, knees slightly bent and leg muscles engaged.
- Locate the center of your kneecap.
- Measure exactly 6 inches above the center of your kneecap and measure the circumference of your thigh at that point.
- Measure the circumference directly around the center of your knee.
- Measure exactly 6 inches below the center of your kneecap and measure the circumference of your calf at that point.
- Compare all three measurements with the size chart below before selecting your size.
| Size | Thigh 6" Above Mid-Patella | Knee Center | Calf 6" Below Mid-Patella |
|---|---|---|---|
| X-Small | 13" – 15.5" (33 – 39 cm) | 12" – 13" | 10" – 12" |
| Small | 15.5" – 18.5" (39 – 47 cm) | 13" – 14" | 12" – 14" |
| Medium | 18.5" – 21" (47 – 53 cm) | 14" – 15" | 14" – 16" |
| Large | 21" – 23.5" (53 – 60 cm) | 15" – 17" | 16" – 18" |
| X-Large | 23.5" – 26.5" (60 – 67 cm) | 17" – 19" | 18" – 20" |
| 2XL (XXL) | 26.5" – 29.5" (67 – 75 cm) | 19" – 21" | 20" – 22" |
| 3XL (XXXL) | 29.5" – 32" (75 – 81 cm) | 21" – 23" | 22" – 24" |
How to Choose Your Size
- Start with the thigh measurement. Enovis uses the thigh circumference 6 inches above mid-patella as the primary OA Reaction Web ordering measurement.
- Check the knee-center and calf measurements. These help confirm that the brace will fit the shape of your leg and center properly around the knee.
- If all measurements fall in the same row, select that size.
- If you are between sizes or exactly on a boundary, select the next larger size for optimum comfort and fit.
- If the thigh suggests a smaller size but the knee or calf suggests a larger size, do not automatically choose the smaller size. The larger size may provide a better fit around the knee.
Example: Small vs. Medium
A thigh measurement within the Small range does not necessarily guarantee the best fit if the knee-center measurement is in the Medium range. Because the silicone web and hinge must center correctly around the knee, use the knee and calf measurements as additional fit checks before ordering.
How to Put On the DonJoy OA Reaction Web Knee Brace
- Pull on the included undersleeve if desired and center the kneecap in the sleeve opening. The undersleeve is optional.
- Place the silicone web over the knee and center the web opening over the kneecap.
- Position the off-loading hinge with silicone pad at the center of the knee joint.
- Feed and secure the calf and thigh straps on the side opposite the off-loading hinge.
- Tighten the lower calf straps until snug.
- Tighten the upper thigh straps until the brace feels secure and comfortable. Do not overtighten.
Check the Fit Before Wearing
The web opening should remain centered over the kneecap and the off-loading hinge should sit at the center of the knee joint. If you cannot center both correctly without pulling the brace excessively tight or shifting the web toward the kneecap, recheck both the size and the medial/lateral configuration before using the brace.
DonJoy OA Reaction Web Product Video
Frequently Asked Questions
Does insurance cover this? Can I save vs. my doctor's office?
This product is HSA/FSA eligible. If your insurance plan has a high durable medical equipment (DME) deductible, your out-of-pocket cost through a medical provider may be higher than purchasing the brace directly. Check your individual insurance plan for DME coverage and deductible information.
How do I know which DonJoy OA Reaction Web configuration to order?
Choose according to both the affected knee and the location of the osteoarthritis pain. For right medial or left lateral pain, select Right Medial / Left Lateral. For right lateral or left medial pain, select Right Lateral / Left Medial.
What do medial and lateral mean on a knee brace?
Medial means the inner side of the knee, toward your other knee. Lateral means the outer side of the knee, away from your other knee.
How do I measure for the DonJoy OA Reaction Web Knee Brace?
Measure your thigh circumference 6 inches above the center of the kneecap, measure directly around the center of the knee, and measure your calf circumference 6 inches below the center of the kneecap. Compare all three measurements with the size chart before choosing a size.
Which measurement is used to order the OA Reaction Web?
Enovis uses thigh circumference measured 6 inches above mid-patella as the primary ordering measurement. Knee-center and calf measurements are useful additional fit checks to confirm that the brace can center properly around your knee.
What if my thigh and knee measurements suggest different sizes?
Do not automatically choose the smaller size. The silicone web and off-loading hinge need enough room to center correctly around the knee. If your knee or calf measurement falls into a larger size, the larger size may provide a better fit.
What should I do if I am between sizes?
If you are between sizes or your measurement falls exactly on a size boundary, select the next larger size for optimum comfort and fit.
How should the DonJoy OA Reaction Web sit on my knee?
The web opening should be centered over the kneecap and the off-loading hinge with silicone pad should sit at the center of the knee joint. The brace should feel snug and comfortable without being overtightened.
What conditions is the OA Reaction Web intended to support?
The DonJoy/Enovis instructions indicate the OA Reaction Web for mild to moderate unicompartmental osteoarthritis of the knee and patella.
Is the DonJoy OA Reaction Web a post-op ROM knee brace?
No. The OA Reaction Web does not provide the adjustable range-of-motion controls found on a dedicated post-operative ROM knee brace. It is designed primarily as a lightweight off-loading knee brace for unicompartmental osteoarthritis.
Does the DonJoy OA Reaction Web include an undersleeve?
Yes. A fitted DonJoy undersleeve is included with the brace. Wearing the undersleeve is optional.
Can the OA Reaction Web be worn under clothing?
Yes. The lightweight, low-profile open-web construction can be worn under many types of pants and other clothing.
Authorized DonJoy / Enovis Dealer
OrthoTape.com is an authorized DonJoy / Enovis dealer. The OA Reaction Web is backed by a 6-month manufacturer warranty against qualifying defects in materials or workmanship.