The knee joint has two compartments: the medial, which is the inner side, and the lateral, which is the outer side. In osteoarthritis, one compartment typically has more cartilage damage than the other, causing that side to carry a disproportionate load during movement.
An unloader brace applies carefully positioned contact points at the thigh, knee, and shin to create a gentle corrective force that shifts weight toward the more intact compartment. This off-loading mechanism is what separates it from a general support brace — rather than just stabilizing the joint, it actively redistributes load within it.
The degree of off-loading can typically be adjusted through the hinge, allowing you or your care provider to tune the correction as needed. Before selecting or using an unloader knee brace, consult your physician or physical therapist. This type of brace delivers the best results when sized and fitted correctly for your specific knee.
Unloader Knee Braces At Ortho Bracing
We carry two OA unloader knee braces from brands we've carefully vetted for effectiveness and comfort. Here is a detailed look at each.
Breg Fusion OA Plus Knee Brace
The Breg Fusion OA Plus Knee Brace is a prefabricated OA brace built for medial compartment off-loading. Breg's ProForm technology contours closely to the leg to minimize migration during daily wear, so the brace holds its position whether you're walking the neighborhood or moving through a full day on your feet. The thumbwheel dial hinge lets you adjust off-loading without tools, making day-to-day tuning straightforward.
The frame is lightweight and low-profile, designed to fit under most clothing without significant bulk. Medial, lateral, anterior, and posterior stabilization are all provided through the frame structure. Available in six sizes from X-Small to XX-Large, the Fusion OA Plus is a prefabricated option that accommodates a wide range of leg shapes at a lower price point than a custom brace.
Key features include:
- ProForm technology for a contoured, migration-resistant fit
- Thumbwheel dial hinge for tool-free off-loading adjustment
- Medial and lateral, anterior and posterior stabilization
- Lightweight, low-profile frame
- Six sizes: X-Small through XX-Large
- Prefabricated, available without a custom fitting
For additional Breg products, our
Breg knee and orthopedic products page lists the full range we carry.
DonJoy ClimaFlex OA Knee Brace
The DonJoy ClimaFlex OA Knee Brace is a wraparound OA brace built around DonJoy's C-6 fabric technology, which weaves carbon threads into a moisture-wicking, antimicrobial material that actively manages temperature during wear. This makes it a practical option for people who find standard brace materials uncomfortable in warmer conditions or during light activity.
The ClimaFlex OA uses a keyless dual-action dial hinge for on-the-fly off-loading adjustments. E-Z Grip handles and a wraparound design make it easier to put on and remove independently. The brace suits mild to moderate OA knee support and is designed for walking, golf, hiking, and extended daily use. Sizing is based on thigh circumference six inches above the mid-patella, and the brace is ordered by side based on which compartment is affected.
Key features include:
- C-6 carbon fabric technology: moisture-wicking, antimicrobial, temperature-regulating
- Keyless dual-action dial for on-the-fly off-loading adjustment
- E-Z Grip handles for easier independent application
- Wraparound design with adjustable compression
- Suitable for light activity including walking, golf, and hiking
- Ordered by side based on affected compartment
Picking The Right Unloader Brace For Your Knee
Both braces address OA knee support, but they suit different priorities. Our full
knee braces collection lists all available options.
The Breg Fusion OA Plus is the stronger structural option. ProForm contouring and a six-size range give it a close fit across a wider range of leg shapes, and the thumbwheel dial makes adjustments simple. For people who need consistent off-loading throughout the day and want a brace that stays in place during varied movement, this is the more robust choice.
The DonJoy ClimaFlex OA is the better fit for people who prioritize comfort during extended wear, particularly in warm conditions. The C-6 fabric actively manages heat and moisture, and the keyless hinge makes quick adjustments practical during activity. For anyone whose daily routine includes walking, outdoor activity, or extended time on their feet in warmer weather, the ClimaFlex OA offers a meaningful material advantage.
For additional context on unloader versus hinged designs, our resource on
hinged and unloader knee braces covers both categories.
Sizing And Fit
Getting the right size is one of the most important steps when ordering an unloader brace. An ill-fitting brace delivers less effective off-loading regardless of how well the hinge is adjusted.
For the Breg Fusion OA Plus, sizing is based on measurements taken at points above and below the knee. A measuring guide and video are available on the product page. For the DonJoy ClimaFlex OA, measure your thigh circumference six inches above the mid-patella while standing, then order based on which side of the knee requires off-loading.
Adding Cold Therapy To Your Knee Routine
Many people who wear an unloader knee brace also use cold therapy after activity as part of their daily knee care routine. Our
cold therapy machines for knee support collection covers the at-home options available. For questions about insurance coverage, our resource on
whether insurance covers knee braces has more detail.
