Displaced fractures of the apophysis of the olecranon in children who have osteogenesis imperfecta.

Seven fractures of the apophysis of the olecranon in five children who had mild osteogenesis imperfecta were treated with open reduction and internal fixation followed by immobilization in a cast. All of the fractures healed uneventfully. The patients were examined after an average duration of follow-up of thirty months (range, twelve to sixty months); at that time, no patient reported pain or limitation of function. In the four elbows that had been followed for three years or more, there had been no observable disturbance of growth.