THE VICTIM WAS BEING PULLED BEHIND A SKI BOAT ON LAKE PLEASANT.  HE WAS RIDING ON A SKI TUBE WHEN THE SKI TUBE HIT ANOTHERS BOAT WAKE AND IT STARTED TO SUBMERGE.   THE SKI TUBE THEN SHOT BACK TO THE SURFACE AT A HIGH RATE OF SPEED THROWING THE VICTIMS ARMS BACK CAUSING HIS RIGHT SHOULDER TO BECOME SEPARATED.  THE VICTIM WAS TRANSPORTED TO SHORE ON THE BACK OF THE SKI BOAT AND HE WAS TREATED AT THE SCENE BY ORLAND FIRE RESCUE, AND STEUBEN COUNTY EMS.  HE WAS THEN TRANSPORTED TO LAGRANGE PARKVIEW HOSPITAL.  THE VICTIMS DISLOCATED RIGHT SHOULDER WAS THEN PUT BACK IN PLACE BY THE ER DOCTOR.