Plica Pinch: More than likely you are pinching a band of synovial tissue in your knee under your kneecap. It gets inflamed with squats and bending. When you sit and bend your knee it stretches out and catches when standing up. Answer: stretch your hamstrings and strengthen your quads with straight leg raises.
Answered 3/31/2013
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Patellofemoral pain: This is the classic "movie theater sign" which is representative of degenerative changes in the patellofemoral joint (pain between the kneecap and femur). This is a relatively difficult problem to treat, but physical therapy is a good place to start.
Answered 1/15/2016
5.2k views
See rheumatologist: Likely underlying osteoarthritis or deconditioning. See rheumatologist or physiatrist.
Answered 9/28/2016
5.2k views
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