Bipartite clavicular attachment of the sternocleidomastoid muscle: a case report / 대한해부학회지
Vandana MEHTA; Jyoti ARORA; Ashwani KUMAR; Ashish-Kumar NAYAR; Hitendra-Kumar IOH; Vanita GUPTA; Rajesh-Kuamr SURI; Gayatri RATH.
Anatomy & Cell Biology
; : 66-69, 2012.
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| WPRIM | ID: wpr-100670
Morphological variations of the sternocleidomastoid (SCM) muscle assume relevance during attempted surgical interventions in the cervical region. The present study reports bipartite clavicular attachment of the SCM in the neck of an adult male cadaver during performance of a routine anatomy demonstration. The anomaly was unilaterally observed on the left side of the neck. The clavicular head of the muscle exhibited two bellies, one medial and one lateral. While the medial belly was fused with the sternal head, the lateral belly appeared to blend with the medial. Cranially, the SCM attached to the mastoid process and superior nuchal line. We have attempted to elucidate the embryological basis of the above muscular variant. Additionally, we discuss its clinical relevance, highlighting the utility of the SCM in various reconstructive procedures. We assert that detailed anatomical knowledge of such SCM variants is of utility not only to the gross anatomist, but also for neck and orthopaedic surgeons and anaesthetists. Moreover, radiologists require familiarity with such aberrations to decipher magnetic resonance imaging scans of the cervical region.
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