1Classification and treatment progress of degenerative scoliosisQIU Yong541-5452Surgical treatment of degenerative lumbar spine diseases in elderly patientsSU Qing-jun, LIU Tie, KANG Nan, YANG Jin-cai, ZANG Lei, MENG Xiang-long, YUAN Shuai, HAI Yong546-5503Analysis of effects of asymmetrical pedicle subtraction osteotomy for degenerative lumbar kyphoscoliosis with concomitant trunk imbalanceZHU Feng, QIU Yong, QIAO Jun, BAO Hong-da, ZHU Ze-zhang, XU Lei-lei, WANG Bin, QIAN Bang-ping, YU Yang551-5554Meta-analysis of posterolateral fusion and posterior lumbar interbody fusion in the treatment of lumbar spondylolisthesisLIU Xiao-yang, WANG Yi-peng, YU Bin556-5625Radiologic stability analysis of adjacent segments after different fusion segments of posterior lumbar interbody fusionLIU Yu-zeng, HAI Yong, YANG Jin-cai, GUAN Li563-5676Inlfuencesofanatomyparametersonthepathogenesisandprogressevenpostoperativerestorationoflumbarspondylolysis and spondylolisthesisLIU Wei-qiang, WANG Bing-wu, XU Zhao-wan, SUI Guo-xia, SHI Yu-lin, LI Feng, JI Xu-bin, LIU Da-yong, LUN Deng-xing568-5737Effects of single-level dynamic cervical implantation on the cervical alignment and range of motionLI Zhong-hai, HOU Shu-xun, WU wen-wen, YU Shun-zhi, HOU Tie-sheng574-5798Surgical reconstruction strategy of high level sacral tumors after tumor resectionWU Qiang, SHAO Zeng-wu, YANG Shu-hua, WANG Bai-chuang, FAN Lei580-5839Hangman fracture combined with tracheal injury:a case report and literature reviewGAO Meng-liang, SUN Hai-yan, WANG Qian-jun, SONG Yuan-jin, SUN Jia-shu, HAO Qi-quan, WANG Ying-sheng, CHU Chao, SUN Shu-fa, LIU Xue-peng, ZHANG Yin-feng588-59210Advances in biotherapies for the treatment of degenerative disc diseasesHE Shou-yu, QIU Yong593-59711Progresses in the treatment of coronal shear fractures of the capitellumJIANG Gang-qiang, LI Hai-feng, RUAN Di-ke597-600