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DonJoy OA Nano Knee Brace donJoy-oa-nano-knee-brace OA-Nano

DonJoy OA Nano Knee Brace

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Donjoy OA Nano Knee Brace is the world's lightest functional OA knee brace. The flexibility of the magnesium frame allows for an intimate fit, while the revolutionary nano MAG material provides strength to off-load and pain relief. For mild to moderate knee osteoarthritis (OA), OA Nano is designed for people to stay active and move freely, making patient compliance a reality.

Why choose Donjoy OA Nano Knee Brace?

  • Lightweight knee brace weighs 14.2 oz
  • For mild to moderate knee osteoarthritis
  • Adjustable malleable magnesium frame for an intimate fit
  • The contoured design keeps the brace in place
  • Helps to reduce OA pain


Total: $747.29

Earn $22.42 in HPFY rewards

For Assistance 877-278-6039

Donjoy Osteoarthritis Knee Brace Features

  • Unlimited Comfort - Malleable magnesium frame allows cuff adjustment and delivers patient compliance
  • Light as Air - Material science collides with innovation to create the world's lightest OA knee brace
  • Stays in Place - Contoured design enhances brace suspension for various levels of activity
  • Dependable Off-Loading - New world material nano MAGTM (on the loading side) provides strength when offloading
  • Clinically Proven - DonJoy's Adjuster technology off-loads (mechanically shifts weight away from the damaged part of the knee) a little - or a lot
  • Revolutionary in weight and profile - OA Nano offers industry-leading high-tech comfort and pain relief, ensuring that patients will choose this safe, non-invasive treatment over other options
  • Light weight - World’s lightest knee brace at 14.2 ounces

Why use this Product?

  • The Arthritis Foundation has honored DonJoy knee braces with its coveted "Ease-of-Use" commendation after an independent research lab conducted rigorous testing to ensure that they met the needs of people with functional limitations due to the effects of arthritis

What to buy with a Knee Brace

How to use Donjoy Unloader Knee Brace?

Donjoy OA Nano knee Brace Instructions Donjoy knee brace using instructions

  1. While seated at the edge of a chair, flex your knee to 45° and slip on the brace. (Fig 2)
  2. Center the hinges 1 inch (2.5 cm) above the top of the knee cap and slightly behind the midline of the leg, and attach straps #1 and #2. (Fig 3)
  3. Push both hinges toward the back of the leg and then attach strap #3(Fig 4)
  4. Draw the hinges forward slightly, but not beyond the midline of the leg, and attach the anti-migration band. Then attach straps #4 and #5(Fig 5). For OA Nano and 4Titude OA Nano, an anti-migration band will need to be applied in the accessory bag. See antimigration band application instructions.
  5. The hinges should center just above the top of the knee cap and slightly behind the midline of the leg. (Fig 6)
  6. Once the brace is on, perform knee bends and walk around to verify no brace slippage occurs. (Fig 7). If necessary, tighten the straps in the numbered order. The strap lengths can be adjusted beneath the strap pad. (Fig 8)

How to apply the strap pad (For OA Nano only)?

  • For additional comfort, five (5) strap pads are included in the accessory bag.
  • These are placed internally on each strap (via Velcro attachment) to enhance overall fit and comfort.

How to apply an anti-migration band?

  • The anti-migration band enhances brace suspension (if needed).
  • Separate application instructions are located in the accessory bag for the OA Nano and 4Titude OA Nano users.
  • The anti-migration band is already attached to all OA Adjuster versions.
  • If removed, please reference the application instructions to reapply.

How to install a hinge stop?

  • Detach both condyle pads. Insert 10° extension stops into the front of both hinges.
  • Insert and tighten supplied screws into both hinges.
  • Re-attach both condyle pads.

How to clean this Knee Brace?

  • Regular Cleaning of components is recommended.
  • A dry lubricant such as TeflonTM spray may be applied to the hinge’s internal mechanism and is recommended following use in water.
  • Inspect the hinge screws periodically and tighten them if loose.
  • To clean liners and condyle pads, hand wash in 30° C / 85°F cold water using mild soap, rinse thoroughly, and air dry.
  • Residual soap may cause irritation and deteriorate the material.

Donjoy Knee Brace Instructions

What is Osteoarthritis?

What are the Causes?

The exact cause of OA is not yet known, but causal factors include, but are not limited to:

  • Natural aging and wear and tear.
  • Bleeding disorders cause bleeding in the joint, such as hemophilia.
  • Disorders that block the blood supply near a joint lead to avascular necrosis.
  • Other types of arthritis, such as chronic gout, pseudogout, or rheumatoid arthritis.
  • OA can develop within 10 years of a major joint injury. For example, a teenager who tears their ACL at age 15 could begin to develop OA as early as age 25 or 30.

What are the Symptoms?

Osteoarthritis can remain undetected until a significant portion of joint cartilage has worn away. Signs to look for include, but are not limited to:

  • Joint pain, tenderness, stiffness, and locking
  • Joint swelling (bones around the joints may feel larger than normal)
  • Ligaments and muscles around a joint become weaker and stiffer
  • A cracking or grating sound when a joint is moved
  • Limited range of joint motion

Prevalence for Osteoarthritis

  • Nearly 27 million U.S. adults age 25 and older have Osteoarthritis (OA), a number expected to increase with longer life expectancies, the obesity epidemic, and the approaching wave of 78.2 million baby boomers reaching retirement age.
  • Supporting this prediction, nearly one in two people may develop symptomatic knee OA by age 85, and half of all adults will develop symptomatic OA of the knee at some point in their lives.
  • By 2030, a projected 67 million people will have doctor-diagnosed arthritis.
  • Two of every three obese adults are at risk of developing OA.
  • Before age 45, more men than women have osteoarthritis; after age 45, it is more common in women.

What are the risk factors for developing OA?

Certain factors that increase the risk of developing OA include, but are not limited to:

  • Heredity
  • Being overweight
  • Joint injury
  • Repeated overuse of certain joints
  • Lack of physical activity
  • Nerve injury
  • Aging

Potential complications from Osteoarthritis

Other complications may arise from osteoarthritis. They include, but are not limited to:

Donjoy Osteoarthritis Knee Brace Specifications



Knee Center


X-Small 13" - 15.5" (33 - 39 cm) 12" - 13" (30.5 - 33 cm) 10" - 12" (25.5 - 30.5 cm)
Small 15.5" - 18.5" (39 - 47 cm) 13" - 14" (33 - 35.5 cm) 12" - 14" (30.5 - 35.5 cm)
Medium 18.5" - 21" (47 - 53.25 cm) 14" - 15" (35.5 - 38 cm) 14" - 16" (35.5 - 40.5 cm)
Large 21" - 23.5" (53.25 - 59.5 cm) 15" - 17" (38 - 43 cm) 16" - 18" (40.5 - 47 cm)
X-Large 23.5" - 26.5" (59.5 - 67.25 cm) 17" - 19" (43 - 48.25 cm) 18" - 20" (47 - 50.75 cm)
2X-Large 26.5" - 29.5" (67.25 - 75 cm) 19" - 21" (48.25 - 53.25 cm) 20" - 22" (50.75 - 56 cm)
3X-Large 29.5" - 32" (75 - 81.25 cm) 21" - 23" (56 - 61 cm) 22" - 24" (53.25 - 58.5 cm)


Donjoy OA Nano Unloader Brace Warranty

DJO, LLC will repair or replace all or part of the product and its accessories for material or workmanship defects for a period of six months for softgoods and one year on brace frame/hinges from the date of sale.

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