[002] The Shoulder Questions

Question 1

What is shoulder dislocation, where does it occur and what structures are involved?

Answer 1

Partial or complete separation of clavicle and acromion
Acromioclavicular and/or coracoclavicular ligamenrs are partially or completely torn

Question 2

Where does shoulder dislocation occur at

Answer 2

Glenohumeral joint
Where head of humerus no longer articulating with glenoid

Question 3

What gives the glenohumeral joint stability

Answer 3

1. Glenoid labrum
2. Biceps tendon
3. Arch of coracoid and acromion
4. Synovial and fibrous joint capsule membranes
5. Rotator cuff muscles

Question 4

What is the most pure C5 muscle

Answer 4

Deltoid

Question 5

How do you test for C5 Myotome

Answer 5

Abduction of arm

Question 6

What is the action of serratus anterior and what is the significance of this action

Answer 6

Protracts and rotates scapula, prevents ‘winging’

Question 7

Which nerve is in danger if surgical neck of humerus is fractured?

Answer 7

Ancillary nerve (from brachial plexus (posterior cord))