question: I have a dent in the middle of my kneecap. Could this be from an old injury? I fell on it years ago and Dr had X-rays and MRI ordered and diagnosed it as Osteochondrits Dessecans. Have severe pain in my knee but now my kneecap also started to be painful and gets pretty swollen if I m on it for more then 30 min or so. I am awaiting knee surgery.