Neurosurgery notes/Radial nerve of peripheral nerve injuries

Radial nerve of peripheral nerve injuries

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Parent item
Peripheral nerve injuries
Sub-item
Radial nerve injury in arm
Radial nerve injury in antecubital fossa (C)
Radial nerve injury in forearm (D)
RAG
RAG

Overview

(A) Proximal arm
  • Complete palsy.
  • Usually due to trauma.
  • External pressure, such as crutches.
(B) Mid arm at the spiral groove
  • Trauma or fractures, the most common site.
(C) Antecubital fossa
  • Compression by
    • Tendinous ridge of extensor carpi radialis brevis.
    • Anomalous branch from the recurrent radial artery.
(D) Proximal forearm: posterior interosseous nerve palsy
  • Trauma.
  • Compression by the arcade of Frohse.
  • Space-occupying lesions such as ganglion or PNT.
(E) Proximal forearm: superficial sensory radial nerve palsy
  • Trauma.
  • Compression between the tendons of brachioradialis and extensor carpi radialis longus.
notion image

Motor and sensory deficits

notion image

Images

Proximal margin of the superficial layer of the supinator muscle
Proximal margin of the superficial layer of the supinator muscle
notion image
7.8. Lat«al oi '"ahs ulnaris digit. muscle radial distal From axillary Ext e n la loyal horn r..dial nerve Su cial of r ial

Q&A

  • What makes the extensor carpi radialis muscle unique?
      • It is innervated solely by the C6 nerve root (not sure if this entirely accurate)