Dear Doctors: I was on the couch with my right leg on an ottoman when our black Lab rammed into the inside of my knee. The next day, it really hurt to extend or turn my knee. (Not painful to the touch, though, which seemed weird.)
It felt better in a week, but I want to know what got hurt.
Dear Reader: The knee is the largest joint in the body, and it’s one of the most complex. It’s a hinge joint wi…