holy crap, guys that terrifies me. I have hypermobility in my knees and shoulders, which has always caused problems for me but I never dislocated my kneecap in regular exercise. Unfortuantely, last year I did have two seperate falls that sprained and dislocated my right knee and later sprained my left knee. It has been 12 months since the right knee incident and 5 since the left knee. The healing has been slow going.