Reduces pain and discomfort caused by various knee disorders-chondromalacia patella, Osgood-Schlatter disease, runner's and jumper's knee, some forms of arthritis, and knee degeneration-allowing a return to normal activities with increased mobility. Cho-Pat Knee Strap stabilizes and tightens on the kneecap mechanism by applying pressure on the patellar tendon below the kneecap. This compression reduces or eliminates inflammation and helps prevent knees from giving out. Measure circumference just below kneecap.