EE SLIPPED ON A STEP OF A FUEL/LUBE TRUCK WHILE DISMOUNTING. HE CAUGHT HIS RIGHT WRIST ON A LADDER RUNG & TRANSFERRED THE LOAD TO HIS RIGHT SHOULDER. HE FELT A SLIGHT POP IN HIS SHOULDER SOCKE T & A SLIGHT STRAIN IN HIS TRICEPS AREA. HE RECEIVED MEDICAL ATTENTION ON 10/22 & WAS RELEASED TO RESTRICTIVE DUTY. ON 1/9/01 MRT SHOWED PARTIALTEAR TO ROTATOR CUFF. OFF DUTY FOR SURGERY.