Correlation Analysis Between Spinal Radiographic Balance Parameters And Clinical Prognosis In Degenerative Lubmar Scoliosis

Objective To analyze the correlation between parameters of spinalbalance, which includes coronal balance, sagittal balance and axial rotation,and surgical outcome.Methods A retrospective analysis of27patients with degenerativelumbar scoliosis who consulted in spine surgery center of first affiliatedhospital of chongqing medical university (13males and14females). All thepatients were treated with posterior lumbar decompression, correction,fixation and fusion, followed up from6to12months. Posteroanterior andlateral standing radiographs were performed preoperatively andpostoperatively for all the cases. The measurement parameters included:Coronal plane–Cobb scoliosis angle, plumbline offset from C7to centersacral vertical line (C7-CSVL); Sagittal plane: sagittal vertical axis (SVA),pelvic tilt (PT), sacral slope (SS); Horizontal plane: degrees of vertebralrotation. JOA Low Back Pain Scoring Systerm were used for efficacyassessment. Correlation statistical analysis was performed between clinicaland radiographic parameters improvement ratewith Spearman correlation test. Results In coronal plane, the improvement rate of C7-CSVL andCobb angle don’t have positive correlation with JOA scores after Surgery（rs=0.338，P=0.65＞0.05；rs=0.042，P=0.907＞0.05）; In sagittal plane,SVA, PT, SS all had significant correlation with JOA scores （rs=0.653，P=0.023＜0.05；rs=0.384，P=0.031＜0.05；rs=-0.606，P=0.025＜0.05）;As well, in axial plane, there was a significant positive correlation betweenvertebral rotation and JOA scores（rs=0.430，P=0.037＜0.05）.Conclusion For the surgical patients with DLS, reconstruction of thesagittal balance and local rotary instabilitycan effectively improve the clinical symptoms, achieve good sugeryoutcome.