The effect of spinal sagittal balance on secondary fracture after percutaneous kyphoplasty for osteoporotic vertebral compression fractures
10.3760/cma.j.issn.1671-7600.2018.06.006
- VernacularTitle:脊柱骨盆矢状面平衡对骨质疏松性椎体压缩性骨折经皮椎体后凸成形术后继发骨折的影响
- Author:
Shuai XING
1
;
Yong YANG
;
Yonggang WANG
;
Xuchang HU
;
Cangyu ZHANG
;
Xuewen KANG
Author Information
1. 730000,兰州大学第二医院脊柱外科
- Keywords:
Vertebroplasty;
Osteoporosis;
Fractures,bone;
Sagittal balance
- From:
Chinese Journal of Orthopaedic Trauma
2018;20(6):487-491
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of spinal sagittal balance on secondary vertebral fracture after percutaneous kyphoplasty (PKP) for osteoporotic vertebral compression fractures (OVCF).Methods The data were reviewed of the patients with single segmental OVCF who had undergone PKP at Department of Spine Surgery,Second Hospital of Lanzhou University from March 2014 to December 2015.Of them,21 had secondary vertebral fracture after PKP.As an observational group,they were matched with another 21 patients without secondary vertebral fracture after PKP as a control group (ratio:1:1) for age,gender,body mass index (BMI) and bone mineral density (BMD).Their standard standing plain radiographs of the whole spine were used to measure the parameters of spine-pelvis sagittal balance.The 2 groups were compared in sagittal balance parameters.Results The sagittal vertical axis (26.86 ± 33.55 mm) and thoracic kyphosis (47.62° ± 10.73°) in the observational group were significantly larger than those (4.05 ± 31.93 mm and 41.10 °±8.17°) in the control group (P ＜0.05);the lumbar lordosis (35.29°±8.77 °),sacral slope (22.71 ° ± 5.80°) and pelvic incidence (45.38° ± 7.49°) in the former were significantly smaller than those in the control group (41.71°±9.19°,27.43°±5.29° and 51.19°±8.44°) (P ＜0.05);there were no significant differences between the 2 groups in pelvic tilt or thoracolumbar kyphosis (P ＞ 0.05).Conclusions The OVCF patients with larger sagittal vertical axis,larger thoracic kyphosis and smaller lumbar lordosis may be more likely to suffer secondary vertebral fracture after PKP.A larger pelvic incidence may be a protective factor against secondary vertebral fracture after PKP for OVCF patients.
