FORAMINAL AND EXTRAFORAMINAL LUMBAR-DISK HERNIATIONS

Thirteen patients with foraminal or extraforaminal lumbar disk herniat ion were treated during a 32-month period. Myelography and magnetic re sonance imaging proved to be ineffective in identifying the lesion in most patients. High-resolution computed tomography demonstrated the le sions in all patients, and the findings were subsequently confirmed at surgery. Surgical treatment consisting of disk fragment removal and n erve root decompression was effective in relieving radicular pain.