HAD JUST PARKED FORKLIFT AND WAS STEPPING OFF. WHEN PLACED WEIGHT ON RIGHT FOOT, FELT POP AND HAD INTERMITANT PAIN DURING WEIGHT BEARING AND GAIT. SLIGHT SWELLING TO INSTEP, ALSO TENDERNESS ON PALPATION. POSSIBLE UNFUSED BONE FORM CHILD- HOOD POPPED LOOSE. DX SPRAIN AT THIS TIME, RE- EVALUATION ON 9/11/01.