Reconstruction of spinal stability for intra-and extra-spinal tumor in operation

Abstract

Objective To investigate the preservation and reconstruction of spinal stability for intro-and extra-spinal tumor in operations.Methods Clinical data of 26 patients with intra-and extra-spinal tumor were retrospectively studied.The bone was destroyed by tumor severely in 16 patients,the bone was not destroyed by tumor or destroyed not so severely in 10 patients,but the facetectomy was needed for the removal of tumor.Hemilaminectomy and facetectomy was performed in 20 cases,and laminectomy and facetectomy was performed in 6 cases.The tumor was excised through the posterior approach in 23 patients,and through the posterior approach combined with the anterior approach in 3 patients.The pedicular screw fixation was performed in all the vertebral body except cervical 3 to 7 in which the lateral mass screw fixation was performed.Results All patients began exercising with the support of a simple external brace within 3 weeks postoperatively,there was no displacement or fracture of the instrumentation of internal fixation,and no spinal spondylolisthesis and deformity were observed.Conclusions The spinal stability was destroyed in operation because of facetectomy and laminectomy; sometimes,the spinal stability can be destroyed by the tumor because of bone erosion pre-operatively.Internal fixation should be performed for the reconstruction of spinal stability. Key words: Intra-and extra-spinal tumor; Spinal stability; Internal fixation