Patented Cho-Pat Dual Action Knee Strap provides an extra dimension of relief to stabilize the knee. Applying constant pressure above and below the knee, it relieves pain and supports weak knees while still allowing full mobility. the pressure tightens the kneecap mechanism and allows for improved patellar tracking and elevation, reduced patellar sublaxation, and reduced quadricep misalignment under the surface of the knee. Used for chondromalacia patella, Osgood Schlatter's Disease, Runner's/Jumper's knee and some forms of arthritis/knee degeneration. American-made Cho-Pat supports are available in a range of sizes to deliver customized results.