Updated: 11/9/2015

Anterior Interosseous Nerve

Review Topic
Motor Innervation of Anterior Interosseous Nerve
  • Motor
    • flexor digitorum profundus  - radial half
    • flexor pollicis longus
    • pronator quadratus
  • Sensory
    • none
  • Reflex
    • none
Origin & Branches
  • C5-T1 roots
    • medial and lateral cord of brachial plexus
      • median nerve
        • AIN
          • branch to FDP
          • branch to FPL
          • branch to pronator quadratus
  • Branch from median nerve
    • branches from median nerve 4cm distal to medial epicondyle
    • it runs along the front of the interosseous membrane of the forearm in the interval between the flexor pollicis longus and flexor digitorum profundus
    • it terminates distally in the pronator quadratus and wrist joint.
Clinical Conditions
  • Anterior interosseous syndrome 
  • Pediatric supracondylar fractures

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