Bilateral Variation in the Origin of Sternocleidomastoid Muscle


  • Punjab Institute of Medical Sciences, Jalandhar, India


Morphological variations of sternocleidomastoid are not uncommon. During our routine dissection, in the department of anatomy PIMS Jalandhar, we encountered a rare case of presence of third head of sternocleidomastoid, bilaterally. This anomalous head is arising from clavicle lateral to the clavicular head of sternocleidomastoid muscle. This report not only adds to the knowledge of anatomists but will hold good to surgeons, anaesthetists and radiologists as well.


Sternocleidomastoid, Spinal Accessory, Sternal, Clavicular.

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