Sternoclavicularis - A variant of Pectoralis Major Muscle.
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Date
2013-01
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Abstract
A rare muscle sternoclavicularis was found in a large triangular gap between the sternocostal and clavicular
heads of Pectoralis Major muscle on the right side during routine cadaveric dissection. Sternoclavicularis was seen to
arise from the anterior surface of manubrium sterni and the capsule of sternoclavicular joint and was inserted on the
anterior surface of middle one third of the clavicle. It was supplied by the lateral pectoral nerve. Sternoclavicularis muscle
may help in stabilizing the clavicle and may partially fill the triangular deficit in the origin of the Pectoralis Major. This
variation may be of particular interest to plastic surgeons, orthopaedic surgeons, radiologists and neurologists. It may
mimic a tumour at this site.
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Keywords
pectoralis major, sternoclavicularis muscle, anatomical variation
Citation
Sontakke Yogesh, Joshi S S, Joshi S D. Sternoclavicularis - A variant of Pectoralis Major Muscle. People’s Journal of Scientific Research. 2013 Jan; 6(1): 33-35.