けいつい後縦じん帯骨化症手術例の検討

Abstract

Postoperative evaluations were performed on eleven patients with the ossification of the posterior longitudinal ligament associated with myelopathy after decompression laminectomy (in nine patients), subtotal spondylectomy (in one patient), and anterior wide spondylectomy (in one patient). Anterior wide spondylectomy was designed to extend subtotal spondylectomy exposing vertebral arteries and to remove ossified posterior longitudinal ligament and dura mata radically. Poor results in two patients were caused by incomplete decompression or traumatic cervical cord injury after laminectomy. Fair results were obtained in three of nine laminectomized patients. Other six patients, including two of anteriorly spondylectomized patients, were evaluated as good. It is concluded that anterior wide spondlectomy was a better procedure for compression myelopathy due to ossification of the posterior longitudinal ligament, because total removal of the ossified ligament became possible with wide exposure of spinal canal.