Proximal humerus fractures: editorial.

Proximal humerus fractures are characterized by their frequency, the difficulties and the absence of treatment of reference. New means of osteosynthesis appeared since the years 2000, as well as the preferential recourse to the reversed prostheses of shoulder. A chapter is dedicated to classifications, as a whole not very reproducible. The new treatments are represented by the nails, such as Telegraph®, and the plates with blocked screws. It appeared a real progress in the osteosyntheses and became infinitely more solid with the stability of the screws in the bone. The advantage of the reversed prostheses of shoulder where the stability of the tuberosities is not essential any more to the good performance from now on is recognized. They are allowed like treatment of reference for the complex fractures of the elderly people. Classifications remain of delicate use. They are known to be not very reproducible. Classification of AST, with quantification of displacement, is proposed. Various reflections relate to the rotators cuff and cephalic necrosis.