WHILE CLIMBING THE LADDER OF 992 LOADER, INJURED LOST GRIP WITH LEFT HAND CAUSING HIM TO FALL ABOUT 15 FEET. STEPS MAY HAVE BEEN SLIPPERY. EMPLOYEE FELL INTO MUD. RESTRICTED TO SEDENTARY WORK, AVOID KNEELING, SQUATTING, STAIRS, CLIMBING. NO OPERATION OF HEAVY EQUIPMENT. AVOID ABOVE SHOULDER LIFTING. MEDICATION GIVEN; X-RAYS TAKEN.