OFF ROAD TRUCK WAS HAULING LIME ROCK FROM QUARRY & HIT A ROCK W/TRUCK WHEEL CAUSING STEERING WHEEL TO SNATCH LEFT WRIST. EE DID NOT WANT TO SEEK MEDICAL ATTN. THE DATE OF ACCIDENT, WHEN HE RET URNED TO WORK ON MONDAY,12/29/03, HE SAID HE NEEDED MEDICAL ATTN. HE WAS DIAGNOSED WITH A SPRAINED WRIST & RETURNED TO WORK THE FOLLOWING MORNING.