Weakness in head-turning suggests injury to the contralateral spinal accessory nerve : a weak leftward turn is indicative of a weak right sternocleidomastoid muscle ( and thus right spinal accessory nerve injury ), while a weak rightward turn is indicative of a weak left sternocleidomastoid muscle ( and thus left spinal accessory nerve ).
22.
Weakness in head-turning suggests injury to the contralateral spinal accessory nerve : a weak leftward turn is indicative of a weak right sternocleidomastoid muscle ( and thus right spinal accessory nerve injury ), while a weak rightward turn is indicative of a weak left sternocleidomastoid muscle ( and thus left spinal accessory nerve ).
23.
Weakness in head-turning suggests injury to the contralateral spinal accessory nerve : a weak leftward turn is indicative of a weak right sternocleidomastoid muscle ( and thus right spinal accessory nerve injury ), while a weak rightward turn is indicative of a weak left sternocleidomastoid muscle ( and thus left spinal accessory nerve ).