open access
Supraclavicularis proprius muscle associated with supraclavicular nerve entrapment
open access
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.
Keywords
entrapment, impingement, supraclavicular fossa, supraclavicular neuropathy, supraclavicularis proprius, supraclavicular triangle, lateral neck
Title
Supraclavicularis proprius muscle associated with supraclavicular nerve entrapment
Journal
Issue
Article type
Case report
Pages
527-530
Published online
2014-11-28
Page views
1351
Article views/downloads
3428
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