Learning Objectives

• Describe the anatomy of the pectoral girdle (clavicle and scapula), demonstrate and explain the movements of the pectoral girdle; identify the muscles responsible for these movements. Name the main attachments and nerve supply of these muscles
• Describe the anatomy of the glenohumeral joint, demonstrate and explain the movements of the glenohumeral joint and identify the muscles responsible for these movements. Name  the main attachments and nerve supply of these muscles
• Describe the factors that contribute to the movement and stability of the glenohumeral joint and explain the functional and clinical consequences of its dislocation
• Describe the boundaries and contents of the axilla, including the major vessels and relevant parts of the brachial plexus

Bones

• what are the bones of the pectoral girdle?
• what are the joints of the pectoral girdle?
• Humerus

Glenohumeral Joint

• structural and functional joint type?
• what degree of bony congruity does this joint have? why is this?
• what is the glenoid labrum? what does it do?
• what are the ligaments of the GH joint?
• what bursae and tendon sheaths are in the GH joint?
• what are the main stabilisers of the joint? how do they stabilise the humeral head?
• what is the most common direction for a shoulder dislocation? why?
• how is the GH joint supported from each direction?

Muscles