Abstract: Objective To analyze the correlation between Roussouly classification,spine-pelvic sagittal balance parameters with prognosis in patients with osteoporotic vertebral compression fractures(OVCF).
Methods A retrospective analysis of 162 cases of OVCF patients admitted to our hospital from February 2018 to December 2019 were treated with percutaneous kyphoplasty(PKP).The spine-pelvic sagittal position was analyzed by the front and lateral X-rays of the lumbar spine.The spine-pelvic sagittal balance parameters,Roussouly classification and the prognostic indicators before and after treatment were recorded.The correlation between spine-pelvic sagittal balance parameters and Roussouly classification and prognosis were calculated.
Results The pelvic tilt angle(PT),pelvic incidence angle(PI),and sacral tilt angle(SS) after treatment were significantly lower than before treatment(P＜0.05).The lumbar lordosis angle(LL) was significantly higher than before treatment(P＜0.05).The difference of the Roussouly before and after surgery the type difference was obviously significant(P＜0.05).After treatment,VAS score and CA were significantly reduced(P＜0.05),while BI was significantly increased(P＜0.05).Balance parameters and Roussouly classification had significant correlation with prognostic indicators(P＜0.05).PT,PI,and Roussouly classification were positively correlated with VAS score and Cobb angle(P＜0.05),and negatively correlated with BI respectively Relationship(P＜0.05),SS and LL were positively correlated with BI(P＜0.05),and negatively correlated with VAS score and Cobb angle(P＜0.05).
Conclusion OVCF can cause the patient's spine-pelvic sagittal parameter imbalance.Roussouly classification and spine-pelvic sagittal parameter are correlated with prognosis.PKP surgery can promote the recovery and improve the prognosis.

Key words: vertebral fracture, osteoporotic； Roussouly classification, spine-pelvic sagittal parameters