頚椎前方固定術後に隣接椎間にヘルニアが生じた２例

Abstract

We successfully treated two patients with cervical disc hernia after anterior fusion. Case 1 was a 50-year-old woman. In 1991 she underwent anterior cervical fusion after being diagnosed with cervical disc hernia (CDH) at another hospital and postoperative course was good. Ten years later, due to numbness of both hands and finger elaborate movement disorder developed, and she visited our hospital for checkup. Cervical disc herinia was noted at the proximal adjacent level of the previous fusion level in magnetic resonance imaging (MRI), for which we performed anterior cervical fusion again. Postoperatively, numbness of the arms and elaborate movement disorder improved. Her Japan Orthopedic Association(JOA) score improved 16 points from 12 points.Case 2 was a 60-year-old man. In 1993 he underwent anterior cervical fusion after being diagnosed with CDH and ossification of the posterior longitudinal ligament. Eight years later, he visited our hospital again for checkup due to numbness of both arms and urine leak. We recognized CDH at the proximal adjacent level of the previous fusion level in MRI for which we performed front fusion again. Postoperatively, spastic paralysis improved. JOA score also improved 12 points from 10 points and he was able to return to work.