RedactedNarrative: operator was pulling his son and his daughter on a tube behind their new Stingray boat. They went to turn and it pushed the tube over the wake of the boat and the tube was projected into the air approximately 5 to 6 feet. When the tube came down and impacted the water the boy went to screaming. They stopped the boat and pulled the tube in to find that his right leg was twisted and that his knee cap was located on the side of his leg. They then called the lake authority and headed to the ramp. The lake authority called 911 and had EMS come and pick victim up and take him to Duke. They diagnosed it as a dislocation and fixed it and sent him home.
   