A number of causes: Most likely its a meniscal lesion, or a chondral/ligament lesion. At your age, it could be a knee cap problem or something called osteochondritis (although you might be old for it). You should see your orthopod.
Answered 4/15/2013
5.2k views
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question