EE HAD KNEE SURGERY ON HIS RIGHT KNEE. SAID TH AT IT HAS BEEN GIVING OUT ON HIM AS HE WALKS. AS HE WAS WALKING DOWN THE ENTRY HE TWISTED HIS KNEE, THIS IS A EXACERBATION OF HIS PREVIOUS INJUR URY(RECURRENCE). HIS DR. SAID IT WAS SAME INJURYAND HE HAS A LOT OF ARTHRITIS IN HIS KNEE.