EE WAS STEPPING OFF A MOTOR HOUSING TO THE FLOOR BASE SUPPORT. HIS FOOT CAUGHT ON TOP OF AN OLD LIGHT FIXTURE HE HAD JUST REMOVED & HE LOST HIS BALANCE BACKWARDS. HE ATTEMPTED TO CATCH HIMSELF WITH HIS LEFT ARM BUT HIS ELBOW BECAME DISLOCATED. THIS ELBOW HAD BEEN DISLOCATED YEARS BEFORE IN SCHOOL.