DONJOY OA Nano Arthritis Knee Brace – Lightweight Support for Knee Osteoarthritis
Light as Air – Maximum Comfort, Minimal Weight
Material science meets innovation with the DONJOY OA Nano™ Knee Brace. Engineered from revolutionary nano MAG™ magnesium alloy, this lightweight, flexible frame offers superior offloading and pain relief for patients with mild to moderate knee osteoarthritis. Designed for those who want to stay active without the weight of a traditional brace.
Price: $812.00 CAD
Why Choose the OA Nano?
At just 14.2 ounces, the OA Nano is the lightest OA knee brace in the world. It’s a non-invasive, non-addictive solution for osteoarthritis treatment—offering functional pain relief and enhanced mobility with DonJoy's renowned performance and design.
Key Features:
- Ultra-lightweight magnesium frame – Just 14.2 oz
- Adjuster™ technology – Off-loads pressure from affected knee compartment
- Unlimited comfort – Flexible frame conforms to your leg shape
- Enhanced suspension – Contoured fit stays in place during movement
- Clinically proven to reduce OA pain and delay surgical intervention
- “Ease-of-Use” Commendation from the Arthritis Foundation
Ideal For:
- Individuals with mild to moderate unicompartmental knee osteoarthritis
- Patients seeking a non-surgical OA pain solution
- Active individuals who want to continue walking, hiking, or exercising
90-Day Test Drive Guarantee
Unsure if this brace is right for you? DonJoy offers a no-risk trial with our 90-Day Test Drive. If the brace doesn't fit or provide relief, return it—satisfaction guaranteed.
Osteoarthritis: Symptoms, Risks, and Causes
Common OA Symptoms
- Joint pain, stiffness, or swelling
- Locking or cracking sounds in the knee
- Limited range of motion
- Weakened muscles and ligaments
Risk Factors for Knee OA
- Aging and natural joint wear
- Previous injuries (e.g., torn ACL)
- Obesity or lack of physical activity
- Genetics and joint overuse
Potential Complications
- Loss of joint function or mobility
- Chronic pain or stiffness
- Bony nodules or bunions
- Joint fluid buildup
Sizing Guide
Measure your thigh and calf 6" above and below the kneecap to determine your best fit:
| Size | Thigh | Knee Center | Calf |
|---|---|---|---|
| XS | 13" - 15.5" | 12" - 13" | 10" - 12" |
| S | 15.5" - 18.5" | 13" - 14" | 12" - 14" |
| M | 18.5" - 21" | 14" - 15" | 14" - 16" |
| L | 21" - 23.5" | 15" - 17" | 16" - 18" |
| XL | 23.5" - 26.5" | 17" - 19" | 18" - 20" |
| XXL | 26.5" - 29.5" | 19" - 21" | 20" - 22" |
| XXXL | 29.5" - 32" | 21" - 23" | 22" - 24" |
How to Measure:
- Stand with legs slightly bent, muscles contracted
- Measure 6 inches above and below kneecap center
- Wrap flexible tape around thigh and calf at each point

Note: Please allow up to 2 weeks for shipping.
Watch the OA Nano™ In Action
Looking for a Custom Knee Brace?
Need something more personalized? We offer a wide range of custom knee braces tailored to your specific needs. Visit your local area page below: