[Osteosynthesis of fractures of thr proximal end of the humerus by the screw-pin technique].

Both fascicular pinning as described by Appril and palmate pinning are inconvenient in that the pins can perforate the articular cartilage of the humeral head and provoke premature unpinning because of insufficient fixing in an osteoporotic bone. A new osteosynthesis material has been developed to reduce these inconveniences: the screw-pin. This ensures initial stability in the humeral head and allows immediate postoperative re-education of displaced fractures of the upper end of humerus. Results are presented of the use of this new material since 1988 in 26 fractures of upper end of humerus.