Patient : I do jiu-jitsu (ground-fighting martial art) and I felt and heard my knee pop three times towards the upper inside of it in a joint lock. I sat out for the rest of practice and was unable to bend my knee very far. It mostly feels okay now, but when I bend it I feel more resistance than I do bending my other knee. I have absolutely no idea about what could have happened or what sort of injury I have sustained.
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