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Questions and Answers
Which nerves form the brachial plexus?
What injury may result in a flat shoulder deformity?
Which nerve injury leads to wrist-drop?
What is the result of axillary nerve injury?
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Which nerve is responsible for the loss of rounded contour of shoulder (flat shoulder deformity)?
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What is the result of ulnar nerve injury at the wrist?
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Which nerve injury leads to the 'Benediction Attitude'?
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What is a clinical feature of carpal tunnel syndrome?
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In ulnar nerve injury at the elbow, what is impaired due to paralysis of palmar and dorsal interossei?
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What results from median nerve injury at the elbow?
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Study Notes
Brachial Plexus
- The brachial plexus is formed by the ventral rami of spinal nerves C5-T1.
Nerve Injuries
- Axillary nerve injury results in a loss of rounded contour of the shoulder, also known as a flat shoulder deformity.
- Radial nerve injury leads to wrist-drop.
- Ulnar nerve injury at the wrist results in claw hand deformity.
- Ulnar nerve injury at the elbow impairs finger adduction and abduction due to paralysis of palmar and dorsal interossei.
- Median nerve injury at the elbow results in a condition known as 'Benediction Attitude', characterized by flexion of the wrist and fingers.
- Carpal tunnel syndrome is characterized by numbness, tingling, and pain in the hand and fingers, especially at night.
- Injury to the radial nerve can cause wrist-drop, a condition where the wrist is flexed and the hand is limp.
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Description
Test your knowledge of the brachial plexus, a network of nerve fibers supplying the upper limb, including its formation, course, and important nerves arising from it.
