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Saint Petersburg, FL
A 24-year-old female asked:

Why is it that when i am running, my knee cap feels like its jiggling and loose? i run about 16-20 mi/wk, never felt this?

1 doctor answer2 doctors weighed in
Dr. Kim Fagan
Sports Medicine 36 years experience
Tracking problem: The kneecap is designed to glide in a groove in the thigh bone (femur). The movement is controlled by the thigh and hip muscles. Weakness in these muscles can result in the kneecap bouncing around in the groove. This can ultimately lead to pain. Other possible contributing factors to a sensation of the kneecap "bouncing" around are bowlegs, knock-knees, foot pronation, and other malalignments.
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Last updated Aug 16, 2018
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