I've posted recently about tendonitis in my patellar tendon. Well I was resting my elbows on my knees when I had a sudden sharp pain in my knee that was not extremely painful but painful. Now there is a sharp type of pain whenever I lift my leg in the direction where my foot moves backwards towards my butt. Also, the other day I was sitting on a chair and used my legs to drag the chair forward and this same knee had a sudden pain but it was not sharp. Did I pull something other than my patella or did I just stretch my patella a bit?