EMPLOYEE REMOVING PIPING UNDERNEATH MANIFOLD. REMOVED CLAMP FROM ONE END. PIPING SWUNG DOWN FROM OTHER END/ CLAMP. JAMMED LEFT HAND AGAINST HANDRAIL OF WORK PLATFORM. (UNSECURED PIPING) FRACTU RE TO LEFT THIRD FINGER. LIMITED USE OF LEFT HAND, 10 LB LIFTING, APPROX 3 WEEKS.