Anatomy
Also called vertbra prominens. Its spinous process is thick, long, almost horizontal, ends in a tubercle to which the bottom of the ligamentum nuchae is attached. In 70% of people, this is the most prominent spinous process (30% either C6 or T1). In 1 in 500, the transverse process has a forward projection as a cervical (or supernumerary) rib.
Clinical
Cervical rib can cause a thoracic outlet syndrome, with compression (between rib and scalenus muscle) of brachial plexus or subclavian artery.
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