Shoulder Dislocation

Question 1

What is the most common type of shoulder dislocation (Glenohumeral dislocation)?

Answer 1

Anterior shoulder dislocation

- humeral head lies anterior and inferior to glenoid

Question 2

Anterior shoulder dislocation? (2)

Answer 2

External rotation and abduction

35-40% recurrent (it is the commonest disorder)

Question 3

What is it associated with?

Answer 3

Associated with greater tuberosity fracture, Bankart lesion, Hill-Sachs defect

Question 4

Inferior shoulder dislocation also known as? Why?

Answer 4

Luxatio erecta - arm appears to be permanently held upward or behind the head, in fixed abduction.

Question 5

Posterior shoulder dislocation signs? (3)

Answer 5

Proportion misdiagnosed.
Rim’s sign (widened glenohumeral joint > 6 mm)
Light bulb sign (internally rotated humeral head takes on a rounded appearance)
Associated with Trough sign (dense vertical line in the medial humeral head)

Question 6

Superior shoulder dislocation? (2)

Answer 6

Rare

usually following major trauma

Question 7

Mx? (4)

Answer 7

• Analgesia
• Temporary sling
• X-ray prior to reduction to exclude associated fractures
• Reduction with sedation and analgesia

Question 8

Common complication?

Answer 8

Axially nerve damage