Posterior Correction, Decompression Of The Responsible And Long-segmental Instrumental Fusion For Degenerative Lumbar Scoliosis

ObjectiveTo investigate the medium-term effect of posterior correction, decompression of the responsible and long-segmental instrumental fusion in treatment of degenerative lumbar scoliosis. MethodsFrom June 2008 to September 2011, 33 patients with degenerative lumbar scoliosis who received posterior correction,decompression of the responsible and long-segmental instumental fusion were reviewed retrospectively of the first affiliated hospital of zheng zhou university. The VAS scores, JOA scores, Cobb angle, lumbar lordotic angles, coronal and sagittal imbalance before operation, 3 months after opration and final follow-up were observed. ResultsAll patients were followed for an average time of 5.2 ± 1.1 years.Preoperative patient’s JOA score was 12.8±3.4, VAS score was 7.6±1.9, coronal Cobb score was 39.4±11.6°,sagittal lumbar lordosis angle was 17.6±10.3°,coronary imbalance was 2.8±1.1cm, sagittal imbalance was 4.4±2.6cm. Three month after operation, the JOA score was 24.1±2.8, VAS score was 1.8±0.7, coronal Cobb score was 14.5±5.4°, sagittal lumbar lordosis angle was 30.2±12.5°, coronary imbalance was 0.9±0.6cm, sagittal imbalance was 2.5±1.6cm. The JOA score of the last follow-up was 22.8±3.6, VAS score was 2.1±1.5, coronal Cobb score was 14.1±5.8°, sagittal lumbar lordosis angle was 29.4±10.8°, coronary imbalance was 0.9±0.4cm, sagittal imbalance was 2.1±1.3cm. The patients with operation after three month and the last follow-up compared with preoperative were improved. There was no significant significant difference between operation after three month and the last follow-up. The effect of the VAS scores, JOA scores and sagittal lumbar lordotic angles were lost at the final follow-up, There were 3 cases progressed axial pain of waist, and 4 cases mild numb lower limbs. ConclusionPosterior correction,decompression of the responsible and long-segmental instrumental fusion is an effective way for DLS patients with Cobb angle >30° and coronal and sagittal imbalance.