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Related Experiment Videos

Redefining the "Arcade of Struthers".

Herbert P von Schroeder1, Luis R Scheker

  • 1University of Toronto Hand Program, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada.

The Journal of Hand Surgery
|December 4, 2003
PubMed
Summary

The arcade of Struthers is a fibrous canal, not just an opening. Its proximal end is the most common site for ulnar nerve entrapment.

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Area of Science:

  • Anatomy
  • Orthopedics
  • Neurology

Background:

  • The arcade of Struthers is a poorly understood anatomical structure.
  • Its role in ulnar nerve entrapment is often overlooked.

Purpose of the Study:

  • To define the anatomy of the arcade of Struthers.
  • To identify its variations and potential for ulnar nerve compression.

Main Methods:

  • Dissection of 11 fresh upper limb specimens.
  • Detailed analysis of the arcade of Struthers and its relationship with the ulnar nerve.

Main Results:

  • The arcade of Struthers is a 5.7 cm fibrous canal, not a simple opening.
  • Its proximal opening, near the intermuscular septum, showed nerve indentation in all specimens.
  • The canal is formed by fibrous septum, brachial ligament, and triceps fascia/epimysium.

Conclusions:

  • The arcade of Struthers is a distinct fibrous canal.
  • The proximal end of this canal is the primary site for ulnar nerve entrapment.

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