QuestionSBA
QuestionChoice
This answer is incorrect. Damage to the musculocutaneous nerve results in weakness of arm flexion. Whilst it can become damaged in shoulder dislocation, damage to the axillary nerve is much more common.
10007374
d
Musculocutaneous nerve
QuestionChoice
This answer is incorrect. The ulnar nerve can be injured in fractures to the medial epicondyle of the humerus. Damage results in atrophy of the intrinsic muscles of the hand, leading to a claw-hand appearance.
10007375
e
Ulnar nerve
QuestionChoice
This answer is correct. The axillary nerve runs inferior to the glenohumeral joint and is the nerve most at risk in a shoulder dislocation.
10007371
a
Axillary nerve
QuestionChoice
This answer is incorrect. The median nerve can be injured in supracondylar fractures of the humerus. Damage results in weakness of forearm flexion.
10007373
c
Median nerve
QuestionChoice
This answer is incorrect. The radial nerve is most commonly injured in fractures to the mid-shaft of the humerus. Damage results in wrist drop and weakness of arm and forearm extension.
10007372
b
Radial nerve
Concept
Chapter
2693
4119
Axillary nerve injury
Topic
145
Orthopaedics
14021
A 22-year-old man presents to A&E with left shoulder pain and deformity following a fall onto an abducted, externally rotated arm.

On examination, there is pain and deformity of the left shoulder.

Which of the following nerves originating from the brachial plexus is most likely to have been injured?
a