Han Xiao, Sun Weixiang, Qiu Yong, Xu Leilei, Sha Shifu, Shi Benlong, Yan Huang, Liu Zhen, Zhu Zezhang
Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
Biomed Res Int. 2016;2016:8056273. doi: 10.1155/2016/8056273. Epub 2016 Nov 8.
. Halo gravity traction (HGT) is one of the most commonly used perioperative techniques for the treatment of severe kyphoscoliosis. This study was to explore the influence of HGT on the BMD of these patients. . Patients with severe kyphoscoliosis treated by preoperative HGT for at least 2 months were included. Patients' BMD were assessed by dual-energy X-ray absorptiometry at lumbar spine (LS, L2-L4) and femur neck (FN) of the nondominant side. The weight and duration of traction, as well as baseline characteristics, were recorded. . Twenty patients were recruited. The average traction duration was 77.9 ± 13.0 days while the mean traction weight was 39.9% ± 11.1% of total body weight. Remarkable decrease of BMD was observed at LS of 17 (85%) patients and at FN of 18 (90%) patients. After HGT, 75% of patients were found to have osteoporosis, the incidence of which was significantly higher than that before HGT (35%). The correlation analysis revealed BMD reduction was only significantly correlated with the traction duration. . The current study showed that preoperative HGT can have obvious impact on the BMD. The BMD reduction is associated with traction duration, suggesting that long traction duration may bring more bone mineral loss.
头环重力牵引（HGT）是治疗重度脊柱侧凸最常用的围手术期技术之一。本研究旨在探讨HGT对这些患者骨密度（BMD）的影响。纳入术前接受HGT治疗至少2个月的重度脊柱侧凸患者。采用双能X线吸收法评估患者非优势侧腰椎（LS，L2-L4）和股骨颈（FN）的骨密度。记录牵引重量、牵引时间以及基线特征。招募了20例患者。平均牵引时间为77.9±13.0天，平均牵引重量为总体重的39.9%±11.1%。17例（85%）患者的腰椎骨密度显著下降，18例（90%）患者的股骨颈骨密度显著下降。HGT后，75%的患者被发现患有骨质疏松症，其发病率显著高于HGT前（35%）。相关性分析显示，骨密度降低仅与牵引时间显著相关。当前研究表明，术前HGT可对骨密度产生明显影响。骨密度降低与牵引时间有关，提示长时间牵引可能导致更多的骨矿物质流失。
