Axillary arch muscle and pectoralis quartus: an unusual combination of two variant supernumerary muscles in the axillary region - a case report.

Autor: Chemmal M D; Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India., Rohilla S; Department of Anatomy, North DMC Medical College and Hindu Rao Hospital, New Delhi, India., Nomani K; Department of Anatomy, Maharshi Devraha Baba Autonomous State Medical College, Deoria, Uttar Pradesh, India., Dhawan V; Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India. vidhu.dr@gmail.com., Singh S; Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India.
Jazyk: angličtina
Zdroj: Surgical and radiologic anatomy : SRA [Surg Radiol Anat] 2024 Oct; Vol. 46 (10), pp. 1703-1708. Date of Electronic Publication: 2024 Aug 27.
DOI: 10.1007/s00276-024-03447-1
Abstrakt: Variant anatomy in the axillary region is of great clinical significance. It is one of the most frequently accessed regions for radical dissection surgery. During routine dissection of embalmed cadavers, we found a rare case of two accessory muscular slips emerging from the lateral border of latissimus dorsi (LD) and the inferolateral border of pectoralis major (PM), crossing the neurovascular structures in the axilla and merging distally together to the brachial fascia at the upper end of humerus below the bicipital groove. The accessory slip from LD is commonly referred to as the "axillary arch" in literature. We identified the accessory slip from the PM crossing over the axilla as pectoralis quartus. These aberrant slips can cause neurovascular compression in the axilla and can have clinical implications. Prior knowledge of the variant anatomy is the key to successful surgery in the axilla, thereby avoiding inadvertent injuries and post-operative complications.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature.)
Databáze: MEDLINE
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