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Upper Limb Nerve Injuries 2

NERVE 

Anatomy 

  • C5C6 Branch of lateral cord of brachial plexus. Supplies biceps, coracobrachialis and brachialis and skin (lateral cutaneous nerve of forearm)

Causes of injury 

  • most commonly penetrating injury, but occ. # or dislocation of shoulder.

Clinical features 

  • Injury can be overlooked as sensory loss ill-defined and flexion of elbow  by brachioradialis may compensate. Feel for flexion of biceps

Results after injury 

  • Good results after repair

Salvage to restore elbow flexion

  1. Flexorplasty
  2. Anterior transfer of triceps tendon
  3. Transfer of pectoralis major
  4. Transfer of sternocleidomastoid
  5. Transfer of pectoralis minor
  6. Transfer of latissimus dorsi

INJURY & TENDON TRANSFERS 

Anatomy 

See Nerve Compressions

Motor 

  • To triceps, supinators of forearm, extensors of wrist, fingers and thumb.

Sensation 

  • to dorsal aspect of radial 3 1/2 digits.#

 Causes of injury 

  1. # of humeral shaft
  2. lacerations, gunshot wounds
  3. prolonged local pressure (Saturday night syndrome). 
  4. For entrapment syndromes, see Nerve Compressions


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Upper Limb Nerve Injuries 1
Upper Limb Nerve Injuries 2
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