Radial Nerve Injury Overview

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Questions and Answers

Which nerve is affected in crutch palsy, Saturday night palsy, and wrist drop?

  • Ulnar nerve
  • Musculocutaneous nerve
  • Median nerve
  • Radial nerve (correct)

What is the most common cause of crutch palsy?

  • Improperly fitted crutches (correct)
  • Direct pressure onto the upper medial arm or axilla
  • Prolonged external pressure on the wrist
  • Fracture at the radial groove

Saturday night palsy typically results from what mechanism of injury?

  • Direct pressure on the radial nerve at the wrist
  • Fracture of the humerus
  • Prolonged, direct pressure on the upper medial arm or axilla (correct)
  • Repeated use of vibrating tools

Which symptom is characteristic of radial nerve injury at any location along the nerve?

<p>Loss of sensation on the back of the hand (C)</p> Signup and view all the answers

A fracture at which specific location is a common cause of radial nerve injury?

<p>Radial groove of the humerus (A)</p> Signup and view all the answers

Flashcards

Crutch palsy

Nerve injury caused by poorly fitting crutches.

Saturday night palsy

A compressive neuropathy of the radial nerve from prolonged pressure on the upper arm.

Fracture at radial groove

Break in the bone that affects the radial nerve pathway.

Wrist drop

Inability to extend the wrist and fingers, often due to radial nerve damage.

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Compressive neuropathy

Nerve dysfunction caused by prolonged pressure on the nerve.

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Study Notes

Radial Nerve Injury

  • Crutch palsy is caused by poorly fitting crutches.
  • Saturday night palsy is a compressive neuropathy of the radial nerve. It's caused by prolonged, direct pressure on the upper medial arm or axilla by an object or surface.
  • Fracture at radial groove
  • Wrist drop

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