[Costoclavicular syndrome--a rare complication of clavicular fracture].

Neurological or vascular complications in clavicle fractures as a primary lesion are rare. More often these complications develop later caused by large callus formation to encroach the costoclavicular space. That is due sometimes to an additional fracture of the clavicle, which healed under shortening. The prognosis of the costoclavicular syndrome can be improved by early resection of the callus formation and--in special cases--by reconstruction of the original length of the clavicle combined with a stable plate osteosynthesis.