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Accessory part of the deltoid muscle
Affiliations- Department of Anatomical Dissection and Donation, Medical University of Lodz, Poland
- Department of Orthopaedics and Traumatology, University Hospital Queen Giovanna – ISUL, Medical University of Sofia, Bulgaria
- Department of Anatomical Sciences, St. George’s University, Grenada, West Indies
- Department of Neurosurgery, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Department of Neurology, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Department of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Department of Surgery, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Department of Neurosurgery, Ochsner Medical Centre, New Orleans, Louisiana, United States
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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.
Keywords
deltoid muscle, deltoid tendon, anatomical variation, shoulder
About this articleTitle
Accessory part of the deltoid muscle
Journal
Issue
Vol 83, No 1 (2024): Folia Morphologica
Article type
Case report
Pages
226-230
Published online
2023-03-22
Page views
496
Article views/downloads
507
DOI
Pubmed
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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