I operated on a young patient, an athlete with a rare comminuted fracture in the elbow joint (Fig. before). These injuries are very difficult to treat, as the fragments of the joint surface are often small and it is often not even technically possible to reassemble them. I therefore had the opportunity to implant an elbow hemiarthroplasty joint as a reserve, which has not even been used in Austria yet. In the end, it was possible to restore the joint surface, which is certainly a favorable solution for the young patient. X-rays (Fig. after) show the restoration of the shape of the humerus after the operation. Only such perfect treatment enables the patient to lead a full life.