1Research progress on paraspinal muscle degeneration and influencing factors in lumbar degenerative diseasesDING Jun-zhe, LU Shi-bao, KONG ChaoEditorial242-2452An analysis of effects and complications after posterior three-columniation-osteotomy in 67 patients with severe rigid spinal deformityDING Jiang-ping, WENG Xi-sheng, TANG Guo-zhu, WANG Bin, ZHANG Zhen-yun, LI Zong-jian, FENG Xin-wenSpine surgery246-2543A retrospective study of degenerative vertebral fracture after pedicle screw fixation in elderly womenJIN Yu-fei, LIU Yao-yao, YIN Xiang, TU Hong-boSpine surgery255-2584Cerebrospinal fluid leak after dural tear following lumbar surgery: incidence and treatmentWANG Yong, YANG Xiao-xiongSpine surgery259-2645Intravertebral bone cement distribution after percutaneous bilateral stratified or non-strstified vertebroplasty and its clinical effects on OVCFXIE Sheng-rong, DONG Ying-chun, LI Jie, GOU Qi, LI Xu, LI Ding-ding, WU Lin-feng, HE Lin-yun, CHEN Dong-mei, YANG Zhong-yi, CHEN Zhan-yu, DING Zhong-junSpine surgery265-2696A meta-analysis of stabilization exercise for chronic non-specific low back painWANG Xin-pei, ZHANG Peng-fei, WAN Yi, JIANG Shan, ZHAO Chen-guang, YUAN Hua, GENG Xi-chen, LI JiaMeta-analysis270-2777Research progress of Baastrup's disease on its diagnosis and treatmentYE Zhi-wei, PENG Long-hai, ZHU Shi-jie, ZHOU Rong-pingReview278-2818Staged joint replacement in the treatment of infectious knee arthritisDENG Tao, NI Ming, LI Xiang, XU Chi, CHAI Wei, NIU Er-long, ZHOU Yong-gang, HAO Li-bo, ZHANG Guo-qiang, CHEN Ji-yingOriginal article282-2879Effects of InterTan nail and PFNA-Ⅱ internal fixation on tip-apex distance in the treatment of unstable intertrochanteric fracturesZHONG Biao, ZHONG Hua, SUN Wei-weiOriginal article288-29210Ginsenoside-Rb2 effects on osteoclasts in vivo and the molecular mechanismLIU Jia-wei, SU Ke, HUANG Xin, WANG Chun-mei, YUAN ZhiOriginal article293-29811Antibacterial properties and mechanism ofTiO2 nanotube loaded with polyhexamethylene guanidineWU Feng-feng, WANG Guo-rong, GAO Hong-liang, YAN Rui-jian, JIANG Xue-sheng, HU Bin, TANG Pan, JIN Ming-chaoOriginal article299-30612A regression analysis of risk factors associated with vertebral fractures in postmenopausal osteoporosisDENG Yu-quan, XIONG Hai-yan, LI JiaoClinical research and practice307-31113Logistic risk factor analysis of the re-fracture after distal radius fracture of the elderly womenLI Yan, WANG Yan-zhi, JIA Dong-zhao, CHANG Jun-yingClinical research and practice312-31614L5 nerve double crush syndrome following disc herniation and foraminal stenosis: a case reportFU Chu-di, DING Shu-chen, DONG Qian-feng, ZHANG Tao, WU JiCase report317-320 