Palmar digital neuropathy with anatomical variation of median nerve: Usefulness of orthodromic technique: A case report

Jun Soo Noh, Jong Woong Park, Hee Kyu Kwon

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Anatomic variation of palmar digital nerve pathways were reported in several cases. Selective exploration of palmar digital nerves with a nerve conduction study has been challenging, because of technical issues. We report a patient who received bilateral carpal tunnel release operation, complaining of a tingling sensation, and hypoesthesia on the middle and ring fingers. An electrodiagnostic study revealed a sensory neuropathy of palmar digital nerve of the left median nerve, supplying the ulnar side of the middle finger, and radial side of the ring finger. She underwent re-operation of open left carpal tunnel release, and a branching site of common digital nerves of the median nerve was identified not at the palm, but at a far proximal site around the distal wrist crease. Usefulness of an orthodromic sensory conduction study was clarified to eliminate volume conducted response or co-activation of nearby nerves in the patient with selective involvement of palmar digital nerve.

    Original languageEnglish
    Pages (from-to)341-346
    Number of pages6
    JournalAnnals of Rehabilitation Medicine
    Volume43
    Issue number3
    DOIs
    Publication statusPublished - 2019 Jun 1

    Keywords

    • Carpal tunnel syndrome
    • Electrodiagnosis
    • Median nerve
    • Median neuropathy

    ASJC Scopus subject areas

    • Rehabilitation

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