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Ahead of Print
Case report
Submitted: 2023-08-20
Accepted: 2023-10-31
Published online: 2023-12-05
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A previously undescribed case of the axillary arch muscle

Nicol Zielinska1, Bartłomiej Szewczyk1, Łukasz Olewnik1
·
Pubmed: 38078738
Affiliations
  1. Department of Anatomical Dissection and Donation, Medical University of Lodz, Poland

open access

Ahead of Print
CASE REPORTS
Submitted: 2023-08-20
Accepted: 2023-10-31
Published online: 2023-12-05

Abstract

The axillary arch muscle, also called Langer’s muscle, axillopectoralis, or pectodorsalis is a muscular variation of the latissimus dorsi muscle. During a standard anatomical dissection, the axillary arch muscle was found bilaterally. On both sides it originated from the latissimus dorsi as a muscle belly. Next it was passing into wide tendinous structure attached to the tendon of the pectoralis major muscle. Then, the narrow tendinous slip inserted into the coracoid process was found. The axillary arch muscle was innervated by the thoracodorsal nerve on both sides. Knowledge about morphological variations in this region is important since there is a direct relationship with neurovascular structures, e.g., ending branches of the brachial plexus, which may lead to paresthesia or muscle weakness.

Abstract

The axillary arch muscle, also called Langer’s muscle, axillopectoralis, or pectodorsalis is a muscular variation of the latissimus dorsi muscle. During a standard anatomical dissection, the axillary arch muscle was found bilaterally. On both sides it originated from the latissimus dorsi as a muscle belly. Next it was passing into wide tendinous structure attached to the tendon of the pectoralis major muscle. Then, the narrow tendinous slip inserted into the coracoid process was found. The axillary arch muscle was innervated by the thoracodorsal nerve on both sides. Knowledge about morphological variations in this region is important since there is a direct relationship with neurovascular structures, e.g., ending branches of the brachial plexus, which may lead to paresthesia or muscle weakness.

Get Citation

Keywords

axillary arch muscle, latissimus dorsi muscle, pectoralis major muscle, brachial plexus, paresthesia, thoracodorsal nerve, compression

About this article
Title

A previously undescribed case of the axillary arch muscle

Journal

Folia Morphologica

Issue

Ahead of Print

Article type

Case report

Published online

2023-12-05

Page views

167

Article views/downloads

85

DOI

10.5603/fm.97036

Pubmed

38078738

Keywords

axillary arch muscle
latissimus dorsi muscle
pectoralis major muscle
brachial plexus
paresthesia
thoracodorsal nerve
compression

Authors

Nicol Zielinska
Bartłomiej Szewczyk
Łukasz Olewnik

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