The humerus at the top consists of the head which articulates with the glenoid and the greater and lesser tuberosities which serve as attachments for the rotator cuff muscles. The scapula slides long the chest and allows circular and extended movements of the shoulder joint. The coracoid process can be felt on the front and serves as ligament and muscle attachment. The acromion could also be called roof of the shoulder. The scapula spine can be felt at the back as a transverse process and becomes the acromion laterally. It has three different processes and the glenoid cavity (socket) on the lateral aspect which forms part of the gleno-humeral joint The shoulder blade is a triangular and flat bone which slides along the chest. The bones of the shoulder consist of the shoulder blade (also called scapula, the upper arm (humerus) and the collarbone (clavicle). Dr Erik Hohmann Consultant Orthopedic Surgeon. When to see an orthopaedic surgeon for shoulder problems?.Posterior Cruciate Ligament (PCL) Injury.
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