痙性斜頚患者に見られた眼振および眼運動系異常に関する考察

概要

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Pre- and postoperative neurotological findings in a patient who was treated by excision of the bilateral upper cervical radices and spinal accessory nerves were discussed.Before the operation, the head of this patient was kept in the "left turning position" by spasmodic contraction of the right sternocleidomastoid muscle and the patient showed "stepping deviation" to the right. By correcting the head to the normal position, right beating nystagmus was provoked and inhibition of optokinetic nystagmus was observed.After the operation, a degree of spasmodic torticollis was eliminated and abnormal signs of oculomotor system were remarkably abated. Moreover, the neck torsion test (Jongkees) showed normal eye-deviation.From these findings, it was concluded that nystagmus and abnormal signs of the oculomotor system observed in this patient were caused by the hypertonic state of the deep muscles of the neck.
耳鼻咽喉科臨床学会の論文