IN THE GARAGE, INT HE PIT BENEATH WATER TRUCK REMOVING 2 PC DRIVE SHAFT. THE 2 PC DRIVE SHAFT SEPARATED THE UNSECURED PC FELL AND STRUCK EE ON R. ANKLE. EE DID NOT THINK TOO MUCH ABOUT IT AND DID NOT REPORT OR ASK FOR MEDICAL ATTENTION. IT WAS FRI. ANKLE SWELLED UP OVER WEEKEND WITH PAIN. MISSED WORK ON MONDAY. REPORTED.