Mayo Clinic Q and A: What's going on with my kneecap?

DEAR MAYO CLINIC: I was playing a pickup game of football with my kids, took a tumble, and my kneecap made a popping sound. It really hurt, then seemed to get better, but something's not right. Any idea what might be going on? ANSWER: If your kneecap pops or slides to the outside of your knee, you'll definitely know that something's going on. Typically, that "something" is a partial or full dislocation, which means the…
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