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Orthopaedic

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Nerve Injuries

Question
3 out of 51
 

All the following are TRUE about musculocut-aneous nerve injury EXCEPT



A Mid-prone forearm

B Loss of flexion of forearm

C Loss of flexion of wrist

D Flexion of shoulder joint

Ans. D

Flexion of shoulder joint

Musculocutaneous nerve injury- branch of the lateral cord of the brachial plexus

a. Musculocutaneous nerve supplies the muscles and actions

b. Coracobrachialis *Flexes the arm

c. Biceps brachii

i. strong subinator

ii. It is a flexor of the elbow

iii. Short head is flexor of the arm

iv. Long head prevents upwards displacement of the head of the humerus

 Brachialis Flexes the forearm at the elbow joints

Main muscles - producing flexion movement of shoulder joints are

a. Clavicular head of the pectoralis major

b. Anterior fibres of deltoid

Accessory muscles - producing flexion movement of shoulder joints are

a. Coracobrachialis

b. Short head of the biceps

c. Sternocostal head of the pectoralis major

The main muscles producing flexion movements are supplied by axillary nerve not musculocutaneous nerve.

Nerve Injuries Flashcard List

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