EE WAS BEEN EXPERIENCING DISCOMFORT IN HIS LEFT KNEE & LEG FOR PAST YEAR. HE REPORTED THIS TO HIS SUPERVISOR BUT CONT WORK. DUE TO CONTINUING DISCOMFORT HE SOUGHT MED ATTENTION THE DR DIAGNO SED HIS CONDITION AS INTERNAL DISARRANGEMENT & INDICATED THIS COND WAS DUE TO NATURE OF HIS OCCUPATION & REPETITIVE CROUCHING BENDING, & CLIMBING REQD IN DAILY JOB ROUTINE. BEGAN MISSING WORK