A five-year-old boy named Jojo from a village near Munich was diagnosed with a rare malignant tumor called Ewing`s Sarcoma. Usually found in the diaphysis (middle part) of long bones Jojo`s tumor was located in the distal part of his left femur and very close to the growth plate. Since tumor-endoprostheses are not available for such young children due to their small anatomical dimensions, an amputation or rotation plasty has to be performed in these cases.
After a car accident seven years ago, Reggie Cook was left with a variety of injuries that made him unable to walk or feed himself. He injured a major upper extremity nerve in his left arm, losing feeling and function in an otherwise normal limb, and shattered the elbow in his right arm. At this point, he approached his surgeon in El Paso, Texas, Dr. Eric Sides, with the novel idea of using the healthy but useless elbow of his left arm for an elbow transplant to replace the injured one on his right side.