Football can be a dangerous sport, and players run the risk of sustaining serious injuries each time they step on the gridiron. Among the most serious injuries is a dislocated knee, a rare event that ...
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 ...