EE & COWORKER WERE ATTEMPTING TO REPAIR SOME WIRING ON A PORTABLE LIGHT PLANT. EE WAS WALKING AROUND THE PLANT LOOKING AT THE WIRING. HE STRUCKHIS KNEE ON ONE OF THE OUTRIGGERS CAUSING A BROKE N KNEECAP. EE THOUGHT THE PAIN WOULD SUBSIDE AND HE DID NOT REQUEST TO GO TO A DOCTOR UNTIL 2-8-01.