Lateral J Patella Knee Brace
DonJoy
Moderate patella support using J-shaped buttress. Corrects patella maltracking while proving compression and warmth to promote healing. Stabilizes kneecap, prevents subluxation/dislocation, and guides proper tracking. This versatile brace with removable hinges is ideal for active adults seeking comfort and protection.
Recommended for:
- Patellofemoral Syndrome
- Acute Patellar Subluxation
- Knee Dislocation
- Knee Malalignmnet
- Mild Patella Discomfort
Find the Right Fit:
- Stand with feet shoulder-width apart, knees slightly bent, leg muscles gently flexed.
- Place measuring tape flat against the skin (not tight). Measure leg circumference at:
- 6 inches above kneecap
- Center of kneecap
- 6 inches below kneecap
- Use chart to find your size. If you land between sizes—or if thigh and calf measurements suggest different sizes—choose the larger option.
A correctly sized brace will feel comfortably snug and supportive without being excessively tight.
| Size | Thigh | Knee Center | Calf |
|---|---|---|---|
| XS | 13"-15.5" (33-39cm) | 12"-13" (30-33cm) | 10"-12" (25-30cm) |
| S | 15.5"-18.5" (39-47cm) | 13"-14" (33-36cm) | 12"-14" (30-36cm) |
| M | 18.5"-21" (47-53cm) | 14"-15" (36-38cm) | 14"-16" (36-41cm) |
| L | 21"-23.5" (53-60cm) | 15"-17" (38-43cm) | 16"-18" (41-46cm) |
| XL | 23.5"-26.5" (60-67cm) | 17"-19" (43-48cm) | 18"-20" (46-51cm) |
| XXL | 26.5"-29.5" (67-75cm) | 19"-21" (48-53cm) | 20"-22" (51-56cm) |
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Features and Benefits:
Optimal Patellar Tracking
The firm J-Shaped buttress cushion guides your kneecap back into its natural groove with every step, reducing the slipping, popping, and shifting that causes discomfort.Prevents Lateral Shifting
Adjustable compression straps press the buttress firmly against the outer edge of your kneecap, controlling sideways movement during activity.Reduces Swelling and Improves Stability
The Medical-grade compression sleeve helps manage inflammation while stimulating the joint awareness your muscles need for stability.Choose Your Level of Support
Standard or Hinged: Choose the standard sleeve for everyday flat-surface activities, or add rigid hinges for extra lateral stability on stairs, uneven ground, or long hours on your feet.Comfortable to Wear All Day
Choose Drytex® material to keep you cool and comfortable during active use, or Neoprene for added warmth to keep muscles loose and joints limber.
Is this brace right for me?
The DonJoy Lateral J Patella Brace is designed for those seeking reliable patellar support and alignment correction for everyday activities. A sewn-in J-shaped buttress physically guides the kneecap into proper tracking within the femoral groove, while adjustable lateral-to-medial straps secure the buttress firmly in place to prevent lateral subluxation or dislocation. Medical-grade compression from the sleeve helps manage swelling and improves joint awareness throughout the day.
A hinged version is available or those with additional knee joint instability. The Lateral J features removable rigid aluminum hinges that provide structural medial and lateral support the help maintain proper knee alignment on uneven terrain, stairs, and during extended periods of standing.
Available in breathable Drytex® or warming Neoprene, the DonJoy Lateral J knee brace is indicated for runner's knee, patellar tracking disorder, chondromalacia, and acute lateral patellofemoral malalignment.
Ideal for:
Standard (Non-Hinged): Everyday Activities on Predictable Surfaces
- Walking on flat surfaces
- Standing for extended periods
- Household tasks
- Low-impact exercise
- Physical therapy and rehabilitation exercises
- Driving
Hinged: Activities with Variable Terrain or Added Structural Demand
- Walking on uneven surfaces
- Hiking on moderate trails
- Extended standing on hard floors
- Stepping in and out of vehicles
- Light lateral movement activities like golf and casual tennis
Find the Right Fit:
- Stand with feet shoulder-width apart, knees slightly bent, leg muscles gently flexed.
- Place measuring tape flat against the skin (not tight). Measure leg circumference at:
- 6 inches above kneecap
- Center of kneecap
- 6 inches below kneecap
- Use chart to find your size. If you land between sizes—or if thigh and calf measurements suggest different sizes—choose the larger option.
A correctly sized brace will feel comfortably snug and supportive without being excessively tight.
| Size | Thigh | Knee Center | Calf |
|---|---|---|---|
| XS | 13"-15.5" (33-39cm) | 12"-13" (30-33cm) | 10"-12" (25-30cm) |
| S | 15.5"-18.5" (39-47cm) | 13"-14" (33-36cm) | 12"-14" (30-36cm) |
| M | 18.5"-21" (47-53cm) | 14"-15" (36-38cm) | 14"-16" (36-41cm) |
| L | 21"-23.5" (53-60cm) | 15"-17" (38-43cm) | 16"-18" (41-46cm) |
| XL | 23.5"-26.5" (60-67cm) | 17"-19" (43-48cm) | 18"-20" (46-51cm) |
| XXL | 26.5"-29.5" (67-75cm) | 19"-21" (48-53cm) | 20"-22" (51-56cm) |
How To:
Brace Application Guide
Step into the sleeve and pull it up until the front opening surrounds the kneecap. Wrap and secure the bottom neoprene strap, followed by the top strap, ensuring the J‑shaped buttress sits firmly along the outside of the patella to support proper tracking.
To receive maximum therapeutic support, the knee brace should feel snug and supportive without being excessively tight or restricting circulation.
Download product details.
Product Care
Hand wash in warm water using mild soap. Rinse thoroughly. AIR DRY.
Note: If not rinsed thoroughly, residual soap may cause irritation and deteriorate material.
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