Shoulder Joint (Glenohumeral Joint)

Question 1

Mobility vs Stability

Answer 1

shoulder maximises movement but sacrifices stability. Rotator cuff tendons, glenohumeral ligaments, labrum and fibrous joint capsule add stability

Question 2

Rotator Cuff Injuries

Answer 2

Susceptible to damage from rapid/ballistic overhead activities
1. Muscle/tendon strain - occasionally rupture due to high, excessive forces
2. Impingement - typically due to compression of the supraspinatus in the subacromial space

Question 3

Shoulder Dislocation

Answer 3

Majority anterior dislocations
Causes: excessive abduction and external rotation, impact forcing the humeral head forwards

Question 4

Rotator Cuff Muscles

Answer 4

Subscapularis (anterior)
Supraspinatus (posterior)
Infraspinatus (posterior)
Teres minor (posterior)