open access

Vol 73, No 4 (2014)
CASE REPORTS
Published online: 2014-11-28
Submitted: 2014-02-13
Accepted: 2014-03-28
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Supraclavicularis proprius muscle associated with supraclavicular nerve entrapment

A. Raikos, T. English, A. Agnihotri, O. K. Yousif, M. Sandhu, J. Bennetto, A. Stirling
DOI: 10.5603/FM.2014.0081
·
Folia Morphol 2014;73(4):527-530.

open access

Vol 73, No 4 (2014)
CASE REPORTS
Published online: 2014-11-28
Submitted: 2014-02-13
Accepted: 2014-03-28

Abstract

Entrapment neuropathy of the supraclavicular nerve is rare and, when it occurs, is usually attributable to branching of the nerve into narrow bony clavicular canals. We describe another mechanism for entrapment of this nerve with the aberrant muscle; supraclavicularis being found during the routine dissection of an embalmed 82-year-old cadaver. Our report details a unique location for this rare muscular variation whereby the muscle fibres originated posteriorly on the medial aspect of the clavicle before forming a muscular arch over the supraclavicular nerve and passing laterally towards the trapezius and acromion. We recommend that in clinical instances of otherwise unexplained unilateral clavicular pain or tenderness, nerve compression from the supraclavicularis muscle must be borne in mind.

Abstract

Entrapment neuropathy of the supraclavicular nerve is rare and, when it occurs, is usually attributable to branching of the nerve into narrow bony clavicular canals. We describe another mechanism for entrapment of this nerve with the aberrant muscle; supraclavicularis being found during the routine dissection of an embalmed 82-year-old cadaver. Our report details a unique location for this rare muscular variation whereby the muscle fibres originated posteriorly on the medial aspect of the clavicle before forming a muscular arch over the supraclavicular nerve and passing laterally towards the trapezius and acromion. We recommend that in clinical instances of otherwise unexplained unilateral clavicular pain or tenderness, nerve compression from the supraclavicularis muscle must be borne in mind.

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Keywords

entrapment, impingement, supraclavicular fossa, supraclavicular neuropathy, supraclavicularis proprius, supraclavicular triangle, lateral neck

About this article
Title

Supraclavicularis proprius muscle associated with supraclavicular nerve entrapment

Journal

Folia Morphologica

Issue

Vol 73, No 4 (2014)

Pages

527-530

Published online

2014-11-28

DOI

10.5603/FM.2014.0081

Bibliographic record

Folia Morphol 2014;73(4):527-530.

Keywords

entrapment
impingement
supraclavicular fossa
supraclavicular neuropathy
supraclavicularis proprius
supraclavicular triangle
lateral neck

Authors

A. Raikos
T. English
A. Agnihotri
O. K. Yousif
M. Sandhu
J. Bennetto
A. Stirling

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