1. With the patient in lateral decubitus position and protection of the opposite plexus, a sagital skin incision is the first step, followed by the preparation of trapezius and deltoid muscle as well as the bony parts of the shoulder (acromion, clavicle, scapular spine).

Dabei wird der Patient auf der kontralateralen Seite gelagert (evakuierbare Matratze, Plexusschutz).

2. Its lateral border is thick and irregular, and presents three or four tubercles for the tendinous origins of the Deltoideus. Its medial border, shorter than the lateral, is concave, gives attachment to a portion of the Trapezius, and presents about its center a small, oval surface for articulation with the acromial end of the clavicle.

Hier liegt eine flache, knorpelbedeckte Gelenkpfanne, die Cavitas glenoidalis, die mit dem Humeruskopf artikuliert.