Developmental and Dynamic Canal Stenosis as Radiologic Factors Affecting Surgical Results of Anterior Cervical Fusion for Myelopathy

Abstract

Patients in the deteriorated results group showed a higher incidence of preoperative developmental and/or dynamic canal stenosis at the adjacent disc level than those in the the good results group. These results indicate that patients with preoperative developmental canal stenosis are not suitable candidates for anterior cervical fusion. When dynamic canal stenosis is found below or above the level of fusion, simultaneous fusion is recommended to avoid deterioration of the myelopathy.