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Snapping Shoulder Secondary to Subluxation of an Accessory Coracobrachialis

Numerous snapping syndromes have been reported in the musculoskeletal system. Identifying the cause of these symptoms can often be challenging as the underlying abnormality may not be appreciable on routine static examinations. We report a 30-year-old female who presented with an unusual snapping se...

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Autores principales: Madani, Hardi, Ather, Sarim, Giggens, Roxanne, Hasan, Hira, McKean, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cureus 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7273437/
https://www.ncbi.nlm.nih.gov/pubmed/32523824
http://dx.doi.org/10.7759/cureus.7967
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author Madani, Hardi
Ather, Sarim
Giggens, Roxanne
Hasan, Hira
McKean, David
author_facet Madani, Hardi
Ather, Sarim
Giggens, Roxanne
Hasan, Hira
McKean, David
author_sort Madani, Hardi
collection PubMed
description Numerous snapping syndromes have been reported in the musculoskeletal system. Identifying the cause of these symptoms can often be challenging as the underlying abnormality may not be appreciable on routine static examinations. We report a 30-year-old female who presented with an unusual snapping sensation in her right anterior shoulder. This was readily reproducible during shoulder abduction with a palpable clicking evident on clinical examination. Dynamic ultrasound revealed this to be secondary to an accessory coracobrachialis muscle, which subluxed suddenly over the anterior subscapularis tendon during abduction. An accessory coracobrachialis muscle is a rare normal variant that is often asymptomatic. Extra-articular causes of shoulder snapping have been rarely reported, and this is the first case report of an accessory coracobrachialis muscle causing a snapping shoulder phenomenon.
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spelling pubmed-72734372020-06-09 Snapping Shoulder Secondary to Subluxation of an Accessory Coracobrachialis Madani, Hardi Ather, Sarim Giggens, Roxanne Hasan, Hira McKean, David Cureus Radiology Numerous snapping syndromes have been reported in the musculoskeletal system. Identifying the cause of these symptoms can often be challenging as the underlying abnormality may not be appreciable on routine static examinations. We report a 30-year-old female who presented with an unusual snapping sensation in her right anterior shoulder. This was readily reproducible during shoulder abduction with a palpable clicking evident on clinical examination. Dynamic ultrasound revealed this to be secondary to an accessory coracobrachialis muscle, which subluxed suddenly over the anterior subscapularis tendon during abduction. An accessory coracobrachialis muscle is a rare normal variant that is often asymptomatic. Extra-articular causes of shoulder snapping have been rarely reported, and this is the first case report of an accessory coracobrachialis muscle causing a snapping shoulder phenomenon. Cureus 2020-05-05 /pmc/articles/PMC7273437/ /pubmed/32523824 http://dx.doi.org/10.7759/cureus.7967 Text en Copyright © 2020, Madani et al. http://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Radiology
Madani, Hardi
Ather, Sarim
Giggens, Roxanne
Hasan, Hira
McKean, David
Snapping Shoulder Secondary to Subluxation of an Accessory Coracobrachialis
title Snapping Shoulder Secondary to Subluxation of an Accessory Coracobrachialis
title_full Snapping Shoulder Secondary to Subluxation of an Accessory Coracobrachialis
title_fullStr Snapping Shoulder Secondary to Subluxation of an Accessory Coracobrachialis
title_full_unstemmed Snapping Shoulder Secondary to Subluxation of an Accessory Coracobrachialis
title_short Snapping Shoulder Secondary to Subluxation of an Accessory Coracobrachialis
title_sort snapping shoulder secondary to subluxation of an accessory coracobrachialis
topic Radiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7273437/
https://www.ncbi.nlm.nih.gov/pubmed/32523824
http://dx.doi.org/10.7759/cureus.7967
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