open access

Vol 83, No 1 (2024): Folia Morphologica
Case report
Submitted: 2022-08-12
Accepted: 2023-02-01
Published online: 2023-03-22
Get Citation

Accessory part of the deltoid muscle

Łukasz Olewnik1, Nicol Zielinska1, Krzysztof Koptas1, Krystian Maślanka1, Kacper Ruzik1, Georgi P. Georgiev2, Richard Shane Tubbs345678
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Pubmed: 36967626
·
Folia Morphol 2024;83(1):226-230.
Affiliations
  1. Department of Anatomical Dissection and Donation, Medical University of Lodz, Poland
  2. Department of Orthopaedics and Traumatology, University Hospital Queen Giovanna – ISUL, Medical University of Sofia, Bulgaria
  3. Department of Anatomical Sciences, St. George’s University, Grenada, West Indies
  4. Department of Neurosurgery, Tulane University School of Medicine, New Orleans, Louisiana, United States
  5. Department of Neurology, Tulane University School of Medicine, New Orleans, Louisiana, United States
  6. Department of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana, United States
  7. Department of Surgery, Tulane University School of Medicine, New Orleans, Louisiana, United States
  8. Department of Neurosurgery, Ochsner Medical Centre, New Orleans, Louisiana, United States

open access

Vol 83, No 1 (2024): Folia Morphologica
CASE REPORTS
Submitted: 2022-08-12
Accepted: 2023-02-01
Published online: 2023-03-22

Abstract

The shoulder and arm region has numerous morphological variations. The deltoid muscle usually consists of three parts: anterior, middle and posterior. This case report describes a very rare deltoid muscle variant, an addition to the spinal part that is attached proximally at the infraspinatus fascia and the spine of the scapula. The distal attachment transforms directly into the brachialis muscle. Additional parts can affect the biomechanics and function of the joints significantly.

Abstract

The shoulder and arm region has numerous morphological variations. The deltoid muscle usually consists of three parts: anterior, middle and posterior. This case report describes a very rare deltoid muscle variant, an addition to the spinal part that is attached proximally at the infraspinatus fascia and the spine of the scapula. The distal attachment transforms directly into the brachialis muscle. Additional parts can affect the biomechanics and function of the joints significantly.

Get Citation

Keywords

deltoid muscle, deltoid tendon, anatomical variation, shoulder

About this article
Title

Accessory part of the deltoid muscle

Journal

Folia Morphologica

Issue

Vol 83, No 1 (2024): Folia Morphologica

Article type

Case report

Pages

226-230

Published online

2023-03-22

Page views

467

Article views/downloads

471

DOI

10.5603/FM.a2023.0018

Pubmed

36967626

Bibliographic record

Folia Morphol 2024;83(1):226-230.

Keywords

deltoid muscle
deltoid tendon
anatomical variation
shoulder

Authors

Łukasz Olewnik
Nicol Zielinska
Krzysztof Koptas
Krystian Maślanka
Kacper Ruzik
Georgi P. Georgiev
Richard Shane Tubbs

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