[Post-traumatic impingement syndrome caused by a displaced tuberculum majus fragment].

The posttraumatic impingement-syndrome caused by displacement and retraction of the entire great tuberosity with the bony insertions of the supraspinatus or infraspinatus muscle is often diagnosed with delay. Two types are distinguished: 1. The fracture of great tuberosity with proximal and dorsal dislocation of the fragment impairs motion by impinging under the acromion and against the posterior glenoid wall. 2. The multi-fragment bony fracture at the rotator cuff insertion, usually finish in rotator cuff deficiency. The analysis of the last 22 operated patients demonstrates the important preoperative complaints, commonly during a long time before reconstruction. The excellent postoperative results show the importance of the early and generous management of proximal humeral fractures.