What can be done for a knee cap that moves wrong across your knee?

Patellar tracking. Patellar tracking disorder occurs when the kneecap shifts out of place as the leg bends or straightens. It can be due to your anatomy and knee overuse. Take a break from activities that cause knee pain, like squatting, kneeling, running, and jumping. Put ice on your knee, and take antiinflammatory or pain medicines. Strengthen your thigh muscles to keep your kneecap stable.