Lateral J Patella Knee Brace
DonJoy
Dominate every direction with the Lateral J-Patella Brace’s reinforced patellar support.
Ideal for athletes who battle knee tracking issues, it locks your kneecap in place through every cut and sprint. Stay agile, stay steady, and stay in the game—no matter how fierce the play.
The Lateral J Patella Knee Brace can be used to treat or prevent the following knee injuries:
- Overuse Injuries
- Muscle Imbalance
- Runner’s Knee
- Blunt Trauma
- Kneecap Misalignment
- Dislocation
- Chondromalacia
- Patellar Tracking Disorder
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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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Is the Lateral J Patella Brace Right for me?
If you suffer from lateral patellar subluxation, dislocations, or improper patellar tracking this is the brace for you. Still not sure? Try our Brace Advisor for personalized product recommendations to meet your needs!
Designed to support and protect:
- Dislocating Kneecaps (Patellar dislocation)
- Lateral Patellofemoral Malalignment
- Lateral Patellar Subluxation
- Chondromalacia
Best for:
- Everyday activities
- Non-contact sports
Stabilizes The Kneecap To Help Prevent Dislocations And Help Alleviate Pain
The DonJoy Lateral J knee brace is one of our most popular patella stabilizing brace. The brace is equipped with a tubular, lateral “J” buttress that runs alongside the knee and provides support against lateral patellar subluxation, dislocations, or improper patellar tracking. The Lateral J can be worn during day-to-day activities, as well as sports and in water.
Drytex or Neoprene?
Drytex is DonJoy's exclusive solution for patients with neoprene sensitivities or those who prefer less warmth from their bracing. Constructed of a unique patented nylon core and polyester Lycra fabric, it allows for improved airflow while still giving ample support and compression. Perfect for people in warm weather climates and those with neoprene allergies or irritations. (Photo images are of Drytex material with seams. Neoprene material, not shown, does not come with seams). Neoprene is a thicker material that will provide more warmth.
With or Without Hinge?
This brace is available with a removable hinge for added stability for an additional cost. You should order the brace with a hinge if you have joint instability. It will provide more medial and lateral support. Otherwise, you should order the brace without a hinge.
- Tubular, Lateral “J” Buttress
- Helps stabilize your kneecap (patella). Available in left or right configuration.
- Lateral to Medial Straps
- Provides additional stabilization and you get to adjust the straps to provide the support that you need.
- Available in Drytex or Neoprene
- Pick the material that suits your needs.
Product Features…and the benefits you’ll experience!
Product Care
Hand wash with mild detergent and air dry.
Sizing and Measurements
Click on the Size Chart tab above to learn how to measure your leg to determine what brace size you need.
Shop our complete selection of knee braces or browse additional DonJoy products.
Write Your Own Review
Product Questions
I had an ACL repair roughly 6 years ago, and a torn meniscus about a year ago. Most recently, my patella began to sublux occasionally. I'm looking for a brace that will support the patella and provide overall knee stability without being too bulky. I'd also like something that I could wear during sports. Currently, wearing it every day wouldn't be the norm...but it may develop into that as my knees get worse (at that point I would look for a more suitable everyday brace).I've basically narrowed it down to the Reaction and this brace. Which of these two braces would more fit my requirements? Or possibly a different brace?
Question by: Andrew on Jun 6, 2013, 7:04 PM
This brace would be a good option for you, the J buttress provides support to the patella and the length of the brace provides compression and support to the knee.
You have one more option for a Patella Stabilizer. The Tru-pull Lite, provides moderate support and is a smaller brace about 8 inches in length.
You have one more option for a Patella Stabilizer. The Tru-pull Lite, provides moderate support and is a smaller brace about 8 inches in length.
Answer by: Admin on Jun 6, 2013, 7:04 PM
I ordered the small lateral J drytex brace. I play football and when I run or do anything super active my brace tends to shift from the upper thigh. I constantly have to move it back into the complete right fit for every play. It stays in place with my lower leg, just not the upper. Do you suggest a smaller size?
Question by: Ashley on Mar 21, 2016, 8:29 PM
A smaller size might help or a different brace such as the Tru-Pull Lite
https://www.donjoystore.com/donjoy-tru-pull-lite
https://www.donjoystore.com/donjoy-tru-pull-lite
Answer by: Admin on Mar 21, 2016, 8:29 PM
I have this brace in drytex and would like to know how to clean it. Can I just put it in the clothes washer on gentle cycle? I have had it for 6 weeks and it needs to be cleaned/washed.
Question by: Don Gentry on Mar 31, 2012, 6:27 AM
Wash with mild detergent and let it air dry.
Answer by: Admin on Mar 31, 2012, 6:27 AM
Hi, I've dislocated my knee cap a few times and recently chipped the patella as well. My doctor said that chipped spot will grow back with weaker fibro cartilage as the stronger original hyaline cartilage will not grow back. I'm looking for a brace that will prevent future dislocations and also protect the fibro cartilage from chipping, is this J brace right for me?
Question by: Ben on Mar 7, 2014, 9:53 AM
This a good brace to prevent further dislocations. Another choice is the <a href="https://www.donjoystore.com/'donjoy-tru-pull-lite'">Tru-Pull Lite</a>. It is a shorter brace not as hot and gives a little more control over pulling that kneecap into the correct position. Either brace would be a good choice.
Answer by: Admin on Mar 7, 2014, 9:53 AM
How small is the extra small? I'm unsure how to size the brace
Question by: Karen on Jan 12, 2017, 9:23 AM
Take the measurement of your thigh and calf 6" above and below your kneecap using a flexible type tape measure. Use the circumference you measure here to choose your size
Size Thigh Knee Center Calf
XS 13" - 15 1/2" 12"-13" 10"-12"
S 15 1/2" - 18 1/2" 13"-14" 12"-14"
Size Thigh Knee Center Calf
XS 13" - 15 1/2" 12"-13" 10"-12"
S 15 1/2" - 18 1/2" 13"-14" 12"-14"
Answer by: Admin on Jan 12, 2017, 9:23 AM
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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