I have a problem of dislocated patella in my both legs but in my left leg it's occur many times and in few days before when it occurred I have much more and swelling in my knee area and when I went to a Dr. for treatment he said that their was a blood clot and they released that blood through injection but after three days again clotting was occurred like this three times they released it and now I am on bed rest I can't understand what to do please help me out because now a days I have pain and swelling both and dislocation is always occurred. Please help me sir.