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Sternalis Muscle: A Cadaveric Case Report of a Rare Variant With Multiple Branching.
Cureus
August 2024
Human Anatomy and Embryology Department, Faculty of Medicine, Zagazig University, Zagazig, EGY.
The sternalis muscle is a rare anatomical variant located in the anterior thoracic wall. Understanding variations in the sternalis muscle anatomy is essential for clinicians, especially radiologists and surgeons to prevent misdiagnosis and avoid complications during surgical procedures in the anterior thoracic region. We present a unique case of bilateral branched sternalis muscles.
View Article and Find Full Text PDFSternalis featuring tendomuscular fusion to the contralateral sternocleidomastoid: a cadaveric case report.
Surg Radiol Anat
December 2024
Temerty Faculty of Medicine, Department of Surgery, Division of Anatomy, 1 King's College Circle Medical Science Building, University of Toronto, Room 1185, Toronto, ON, M5S 1A8, Canada.
Purpose: To report the morphologic and spatial relationships of a bilateral sternalis muscle variant.
Methods: Routine cadaveric dissection in an undergraduate anatomy laboratory revealed two sternalis muscles parasternal to the sternal body. Subsequent fine prosection of the anterior thoracic wall and neck was carried out to uncover the soft tissue attachments of both sternalis muscles.
Accessory thoracic muscles in human foetuses.
Folia Morphol (Warsz)
November 2024
Department of Clinical Anatomy, Masovian Academy in Plock, Płock, Poland.
Article Synopsis
- The study investigates the development of accessory muscles in the pectoral region of human fetuses, focusing on the pectoralis major and minor muscles, which normally develop from a common embryonic mass.
- Researchers examined 50 human fetuses (25 male and 25 female) between 18-38 weeks of gestation to identify any aberrant muscle formations that could arise from disrupted development.
- The results revealed accessory muscles in 16% of samples, with the pectoralis quartus being the most common; understanding these variations can be significant for clinical practices, particularly in fields like plastic surgery.
Bilateral Sternalis Muscles: The Clinical Significance of This Rare Discovery.
Cureus
May 2024
Faculty of Medicine, Department of Surgery, Division of Anatomy, University of Toronto, Toronto, CAN.
This case report explores the physical characteristics and clinical significance of the sternalis muscle, an uncommon anatomical variation of the anterior thoracic wall. If present, the sternalis muscle may distort diagnostic images and can be associated with incorrect interpretation of such medical images, misdiagnoses, and even surgical complications. As such, enhancing clinicians' knowledge of this muscle and improving its recognition is of the utmost importance.
View Article and Find Full Text PDFAn X across the Chest: A Rare Case of a Criss-crossed Sternalis Muscle.
Acta Med Acad
April 2024
Amrita School of Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi - 682041, Kerala, India.
Article Synopsis
- The case study highlights a rare occurrence of a bilateral sternalis muscle found during dissection, emphasizing its clinical significance.
- This unique muscle, originating from the external oblique aponeurosis, converges at the sternal angle and connects to the sternocleidomastoid.
- Its presence may often be mistaken for chest wall lesions, but it holds potential as a muscular flap for reconstructive surgeries in areas like the breast, head, and neck.
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