Spinal instability is unavoidable after total laminectomy in the treatment of intraspinal neurai tumor excision and protruded disc excision. İn order to prevent a probable spinal instability, posterior instrumentation and fusion was performed with the collabration of treatment of 6 patients with intraspinal tumor excision and 5 patients with multilevel discectomy. Mean age was 31.1. Two patients had Isola Spinal İnstrumentation, 2 had Alıcı Spinal İnstrumentation and 7 had TSRH İnstrumentation. Mean follow up was 14.6 months. A solid fusion mass was ob-served in ali patients and any spinal instability was not revealed after postoperative radiological and clinical evaiu-ation. İn light of these findings it is suggested that posterior instrumentation is needed for the preventation of spinal instability after neurosurgical procedures.
Keywords: Spinal instability, laminectomy, spinai instrumentation, posterior.