Most fractures of the clavicle unite without incident. The number and diversity of the methods of treatment in use suggest that in most cases good results are obtained despite medical supervision. Yet occasionally complications do arise. This paper describes two such cases and reviews the literature in search of a common factor to account for these complications. Cases presenting with early and late complications of fractures of the clavicle are described and the literature on the subject reviewed. The incidence of complications is highest in cases of direct violence to the shoulder region producing comminuted fractures. Surgical management is outlined in general terms. It is suggested that more prolonged and rigorous immobilization of cases "at risk" may reduce the incidence of non-union and prevent late neurovascular complications.