Patient : Yesterday I worked 8 hours with no pain or problems, came home went up, down and up again on my apartment stairs with no problems. Then relaxed at home for aprox 2 hours then while leaving to go to dinner on about the last step I noticed sharp pain in my left knee. (still unclear to me when and where this was caused because I did nothing on stairs for this to happen) Pain continued to get worst throughout the night. While sleeping everytime I would straighten my leg it would be severe pain and wake me up. I worked 8 hours again today with the pain it only hurts when leg is at the 90percent straight leged and when leg is at 90percent bent closed position but the pain is excruciating and is centered at or around the CENTER TOP OF MY KNEECAP.
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