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what happens due to higher lesions of median nerve ?


Roflguy 25th Mar, 2020
Answer (1)
Pratyay Islam 25th Mar, 2020

Site of Injure in Higher lesion - Around Elbow

Lesion Can happen due to - Supracondylar fracture of Humerus and Pronator teres syndrome(Entrapment of median nerve between the two heads of pronator teres)

Motor Loss -

  • Forearm in Supine Position.
  • Weak wrist flexion.
  • Ulnar deviation on attempted flexion.
  • Loss of interphalangeal flexion at index and middle fingers- Benediction Hand.
  • Pointing index finger - Ochsner's Clasping Hand.
  • Loss of terminal phalanx of thumb fexion. Pinch defect. Ape thumb deformity.
  • Paralysis of two lumbricals of index and middle fingers and thenar muscles.

Sensory Loss - Loss of sensation in lateral half of the palm and lateral 3.5 digits(including nailbeds)

The motor are sensory loss that occur due to median nerve injury are discussed above.

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