Sonographic diagnosis of anatomical variations associated with carpal tunnel syndrome

P. De Franco, C. Erra, G. Granata, D. Coraci, R. Padua, L. Padua

Research output: Contribution to journalArticlepeer-review


Bifid median nerve is an anatomic variation that occurs in about 18% of patients with symptoms suggestive of carpal tunnel syndrome and in about 15% of symptom-free subjects. Reversed palmaris longus is a rare anatomic muscular variation. The simultaneous presence of a bifid median nerve and a reversed palmaris longus has been very rarely described, usually during surgical exploration or in cadavers. We present two cases where ultrasound showed the presence of both abnormalities, allowing a correct diagnosis and influencing the treatment plan.

Original languageEnglish
Pages (from-to)371-374
Number of pages4
JournalJournal of Clinical Ultrasound
Issue number6
Publication statusPublished - 2014


  • Bifid median nerve
  • Musculoskeletal
  • Nerve entrapment
  • Peripheral nerves
  • Reversed palmaris longus
  • Sonography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Medicine(all)


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