EE WAS ON A LADDER DOING MAINTENANCE ON A TRUCK WHEN HE STRUCK HIS RIGHT KNEE ON THE LADDER. HE DID NOT SEEK MEDICAL ATTENTION IMMEDIATELY BUT AFTER SOME TIME PAIN & SWELLING WORSENED & HE DID SEE A DOCTOR. HIS CONDITION REQUIRED SURGERY & THE INJURY BECAME REPORTABLE WHEN HE STARTED TO LOSE TIME FROM WORK ON 9/26/02.