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Musculocutaneous neuropathy.

Cullen M O'Gorman1, Charles Kassardjian2, Eric J Sorenson3

  • 1Gold Coast Campus, School of Medicine, Griffith University, Southport, Queensland, Australia.

Muscle & Nerve
|July 21, 2018
PubMed
Summary
This summary is machine-generated.

Isolated musculocutaneous neuropathy is often caused by trauma or surgery. Pain and sensory changes are more common than weakness, and electromyography (EMG) is crucial for diagnosis.

Keywords:
EMGelectrodiagnosisiatrogenicmononeuropathymusculocutaneoustraumatic nerve injury

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Area of Science:

  • Neurology
  • Neurophysiology

Background:

  • Isolated musculocutaneous neuropathy is an uncommon clinical diagnosis.
  • Understanding its etiologies and clinical manifestations is essential for accurate diagnosis.

Purpose of the Study:

  • To determine the causes and clinical presentation of isolated musculocutaneous neuropathy.
  • To interpret the electrodiagnostic findings in patients with this condition.

Main Methods:

  • Retrospective review of patients diagnosed with musculocutaneous neuropathy.
  • Data collected from the Mayo Clinic electromyography (EMG) laboratory between 1997 and 2015.

Main Results:

  • The most frequent cause identified was acute trauma or surgery (65%).
  • Pain and sensory disturbances were more prevalent than motor weakness.
  • Bilateral absence of lateral antebrachial cutaneous nerve sensory responses indicated an inflammatory etiology.

Conclusions:

  • Musculocutaneous neuropathy is typically associated with trauma or iatrogenic injury.
  • Needle EMG examination is vital for diagnosis, as nerve conduction studies alone are insufficient.
  • Routine EMG is recommended for comprehensive diagnostic evaluation.