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Related Concept Videos

Bones of the Upper Limb: Ulna01:15

Bones of the Upper Limb: Ulna

The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side of the...
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Updated: May 24, 2026

Ultrasound-Guided Needle Release Combined with Corticosteroid Injection for the Treatment of Supinator Syndrome
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Published on: May 26, 2023

Ulnar nerve entrapment by anconeus epitrochlearis ligament.

William H C Tiong1, Jason Kelly

  • 1Department of Plastic and Reconstructive Surgery, Cork University Hospital, Wilton, Cork, Ireland, UK. willhct@yahoo.com

Hand Surgery : an International Journal Devoted to Hand and Upper Limb Surgery and Related Research : Journal of the Asia-Pacific Federation of Societies for Surgery of the Hand
|February 22, 2012
PubMed
Summary

Ulnar nerve entrapment at the elbow, a common neuropathy, can stem from rare anatomical variations. This case highlights management of entrapment caused by the anconeus epitrochlearis ligament.

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Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies
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Ultrasound-Guided Needle Release Combined with Corticosteroid Injection for the Treatment of Supinator Syndrome
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Area of Science:

  • Orthopedics
  • Neurology
  • Anatomy

Background:

  • Ulnar nerve entrapment at the elbow is a frequent upper limb neuropathy.
  • Common causes include joint changes, inflammation, and systemic disorders.
  • Anatomical variants are infrequent causes of ulnar nerve entrapment.

Observation:

  • This report details a case of ulnar nerve entrapment.
  • The entrapment was caused by the anconeus epitrochlearis ligament, a rare vestigial structure.
  • The study reviews the management of this specific condition.

Findings:

  • An uncommon anatomical variant, the anconeus epitrochlearis ligament, can cause ulnar nerve entrapment at the elbow.
  • Effective management strategies for this rare cause exist.

Implications:

  • Recognizing rare anatomical variants like the anconeus epitrochlearis ligament is crucial for diagnosing ulnar nerve entrapment.
  • This case contributes to understanding and managing uncommon causes of peripheral nerve entrapment.