EMPLOYEE REPORTED ON 12/9/02 AN ACCIDENT BUT DID NOT SEEK MEDICAL. HE INFORMED COMPANY ON 2/21/03. HE WILL BE HAVING SURGERY ON 2/28/03. EMPLOYEE SAID HE WAS REPAIRING THE ENGINE ON A ROCK TRU CK WHEN HE FELT SHARP PAIN AS HE RAISED HOOD OF ROCK TRUCK.