The related factors of postoperative non-surgical vertebral fractures after percutaneous kyphoplasty

ZHANGBin; SHANGYong; SHITu-long; XUYu-xin

Abstract：Objective To investigate the factors of secondary non-surgical vertebral fractures after percutaneous kyphoplasty (PKP). Methods Collecting 114 cases of osteoporotic vertebral compression fractures in patients with PKP surgery from September 2010 to September 2012, secondary non-surgical vertebral fractures were re-fracture group, no non-surgical fractures were no-fracture group, then using univariate and multivariate analysis. Results Ninety eight cases were followed up for 3~15 months. 23 cases with non-surgical vertebral fractures secondary, accounting for 23.5%. The level of injured vertebral compression before surgery, age, gender,surgical approach,cement leakage between re-fracture group and no-fracture group have no statistically significant difference (P>0.05);bone cement volume, degree of recovery of the injured vertebral anterior height in re-fracture group were higher than that in no-fracture group(P<0.05);while T-score of bone mineral density, body mass index in re-fracture group were lower than that in no-fracture group. Bone mineral density, bone cement volume, body mass index and the degree of recovery of the injured vertebra anterior height were related with secondary non-surgical vertebral fractures. Conclusion Excessive bone cement, low body mass index, over leading edge of the injured vertebral height restoration, low bone mineral density are related to secondary non-surgical vertebral fractures after PKP.