Abstract: Objective To evaluate the operative results of the prolapse of lumbar intervertebral disc and segmental instability.Methods37 patients with prolapse of lumbar intervertebral disc and segmental instability were treated surgically, including nucleus gelatinosus extirpation,!lumbar fusion and transpedicular screw fixation with an average 9-month follow-up after the operation.ResultsAfter the treatment, the completely spine arthrodesis was obtained in all cases. Of 37 cases, 28 cases showed excellent clinical results, 7 cases were good, 2 cases improved, and the total fineness rate was 95.6%.ConclusionIt is an effective therapy for patients with prolapse of lumbar intervertebral disc and segmental instability that fusing and fixing the lumbar with transpedicular screw after nucleus gelatinosus extirpation.

Key words: prolapse of lumbar intervertebral disc, lumbar segmental instability, spine arthrodesis, internal fixation