Yep, that’s quite a mouthful. We think so too, so let’s just shorten it to SCM! There, isn’t that better! 
The function of SCM is to rotate the head to the opposite side (imagine tilting your head as if not understanding a question) as well as to flex the neck.
It is a two headed muscle which means it has two points of origin then merges into one muscle to reach it’s insertion point. The sternal head originates from the manubrium sterni, which is the top portion of of the breast bone. The clavicular head originates from the medial third of the clavicle. It then merges into one and inserts into the mastoid process – the bony protuberance behind the ear.
The SCM is easy to spot on lots of people as they can sit up quite prominently against the front of the throat. Tight or problematic SCM can contribute to neck and head pain, jaw pain, sinus issues, and dizzyness. It is often exacerbated by prolonged computer use with poor posture, as the head and jaw slides forward, causing the anterior neck muscles to contract too much.
Prevention is the best cure with this muscle; keep your chest up and shoulders tilted back which will help keep your head and neck in a more neutral position.
By Kristen Burgess ~ Remedial massage therapist
