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Updated: Dec 17, 2025

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Ulnar Neuropathy Caused by Muscular Arcade of Struthers.

Godard C W de Ruiter1, Japke G H de Jonge2, Monique H M Vlak2

  • 1Department of Neurosurgery, Haaglanden Medical Center, The Hague, The Netherlands.

World Neurosurgery
|June 30, 2020
PubMed
Summary

The arcade of Struthers can cause ulnar nerve compression. Ultrasound identified this rare cause of ulnar neuropathy, and surgery led to full recovery.

Keywords:
Cubital tunnel syndromeDecompressionEntrapmentNeuropathy

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Area of Science:

  • Anatomy
  • Neurology
  • Medical Imaging

Background:

  • The existence and role of the arcade of Struthers in causing ulnar nerve compression remain debated in scientific literature.
  • Ulnar neuropathy is a common condition, but its causes can be varied, including anatomical anomalies.

Observation:

  • A case of ulnar neuropathy was diagnosed preoperatively using ultrasound.
  • The neuropathy was attributed to a muscular arcade of Struthers, an unusual anatomical structure.

Findings:

  • Ultrasound imaging successfully identified the muscular arcade of Struthers as the source of nerve compression.
  • Surgical decompression by transecting the muscular arcade resulted in complete symptom recovery for the patient.

Implications:

  • This case highlights the arcade of Struthers as a potential cause of symptomatic ulnar neuropathy.
  • Ultrasound is a valuable tool for the preoperative diagnosis of atypical nerve compression sites.
  • Confirmation of this anatomical structure's pathological role may influence future diagnostic and treatment strategies for ulnar nerve entrapment.