Usually Jumping: Overuse of your patellar tendon especially by jumping [aka jumper's knee]. The patellar tendon is the large tendon between your kneecap and your leg or shin bone. It is about three finger breadths long. Patellar tendonitis, or inflammation of the tendon, will be painful to firm touching. It is not pain behind the kneecap, or pain at the joint lines, or pain of the tibial turbercle.
Answered 7/12/2012
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