Several options: Meniscal tear could do this or chondromalacia of the patella these can get acutely worse if something that was just cracking &popping before now gets tweeked out of place further now causing more sig pain probably need to go see an orthopedist.
Answered 4/17/2013
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11 doctors weighed in across 3 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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