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Upper Limb Neuro

Peripheral Nerve Signs

February 15th, 2021

Wrist Drop

  • Look For

  • Abnormal flexion of the wrist, due to inability to extend the joint.
  • Significance

  • A classical sign of radial nerve lesion.

Hand of Benediction

  • How to Elicit

  • Ask the patient to make a fist. Benediction hand is present if the patient is unable to flex the index and middle fingers.
  • Significance

  • A classical sign of median nerve lesion.

Claw Hand

  • Look For

  • Extension of the MCP joints and flexion of the IP joints of the ring and little fingers.
  • Significance

  • A classical sign of ulnar nerve lesion.
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