Undecussated innervation to the sternocleidomastoid muscle: a reinstatement.
Clinical evidence is presented to support the contention that the sternocleidomastoid muscle is innervated primarily by undecussated fibers from the ipsilateral hemisphere. Stroke patients often show contralateral hemiparesis accompanied by weakness in head turning to the side of the paresis.
D000055:Accessory Nerve / Q000033:anatomy & histology* / Q000502:physiology; D002561:Cerebrovascular Disorders / Q000503:physiopathology; D004292:Dominance, Cerebral / Q000502:physiology; D006429:Hemiplegia / Q000503:physiopathology; D006801:Humans; D009068:Movement; D009132:Muscles / Q000294:innervation*; D009334:Neck Muscles / Q000294:innervation* / Q000503:physiopathology