Comparison of loss of correction between PSO and VCD technique in treating thoracolumbar kyphosis secondary to ankylosing spondylitis, a minimum 2 years follow-up

Journal of Orthopaedic Surgery and Research

Xiaoxi Yang¹  Tianqi Fan¹  Yan Wang²  Yongyu Hao²  Zhifa Zhang²  Kai Song²  Wenhao Hu²  Chao Xue²  Fanqi Hu²  Chunguo Wang²  Tianhao Wang²  Guoquan Zheng²  Zheng Wang²  Yao Wang²  Xuesong Zhang² 

[1] 0000 0001 2256 9319, grid.11135.37, Peking University 3rd Hospital, No 49. North Garden Street, Beijing, China;0000 0004 1761 8894, grid.414252.4, Chinese PLA General Hospital, 28th Fuxing Road, Beijing, China;

关键词: Correction loss;    Pedicle subtraction osteotomy;    Vertebral column decancellation;    Ankylosing spondylitis;    Thoracolumbar kyphosis;    Complications;   

DOI  :  10.1186/s13018-019-1170-5

来源: publisher

【 摘 要 】

BackgroundPedicle subtraction osteotomy (PSO) and vertebral column decancellation (VCD) are frequently used methods for correction of thoracolumbar kyphosis resulting from ankylosing spondylitis (AS). However, there are limited reports performed to evaluate the difference of loss of correction and the effectiveness of PSO and VCD techniques in patients with thoracolumbar kyphosis secondary to AS.ObjectiveTo retrospectively estimate the effectiveness of correction and loss of correction of PSO and VCD techniques in patients with thoracolumbar kyphosis secondary to AS.MethodsWe performed a retrospective review of 61 consecutive AS kyphosis patients undergoing PSO or VCD surgery from March 2012 to April 2015. The patients were divided into PSO group (n = 25) and VCD group (n = 36) according to the types of osteotomies. Measurement of the radiographic parameters was performed and the change was analyzed.ResultsMean loss of correction in the global kyphosis was 2.31° in the PSO group and 2.29° in VCD group at the last follow-up, respectively, with no significant difference. Progressive junctional kyphosis occurred in both groups. VCD obtained a significantly larger correction than PSO while sharing a similar incidence of complications. No serious complications were observed in the two groups.ConclusionThe PSO osteotomy and VCD osteotomy are both safe and effective methods in treating thoracolumbar kyphosis secondary to AS. Mild loss of correction mainly occurred in the global kyphosis in both techniques with no significant difference.

【 授权许可】

CC BY