EMPLOYEE WALKED TO HIS PERSONNAL VEHICLE, PARKED BY OFFICE TO GET HIS WATER JUG. HE STEPPED ON A ROCK APPROXIMATELY 2 INCHES IN SIZE. THIS CAUSED HIS LEFT ANKLE TO TURN TO THE SIDE. AN X-RAY T AKEN ON OCT 29, 2003 REVEALED A BONE CHIP ON THE OUTER SIDE OF LEFT FOOT.