1Cognition of cervical spondylosisZHAO Ding-lin594-6012Clinical observation of C1-2 pedicle screw ifxation for the disruption of the transverse atlantal ligamentMA Hao-ning, TAN Ming-sheng, YI Ping, YANG Feng, TANG Xiang-sheng, HAO Qing-ying602-6053Multi-segmental cervical spondylotic myelopathy treated by posterior unilateral open-door laminoplasty combined with Centerpiece titanium plate internal fixationXIAO Gang, ZHAO Ning, ZHONG Hua, CEN Yi-biao, LIAO Xiao-yan, CHEN Jin606-6094A comparison of cervical disc arthroplasty versus dynamic cervial implant in the treatment of cervical spondylopathy：a clinical and radiological studyGUAN Li, CHEN Xiao-long, HAI Yong, LIU Yu-zeng, WANG Wen-long, YU Zhi-yi610-6165A biomechanical study of effects of anterior cervical screw sagittal angle on adjacent segmentsLU Zhao-hua, ZHAO Feng, SU Wei-cheng, ZHAO Xiao-yong, ZHAO Yan-tao, LI Zhong-hai617-6216Application of extensive curettage in the treatment of giant cell tumors of the spine：a clinical report of 18 casesHAO Lin, SUN Yang, NIU Xiao-hui622-6267Treatment and prognosis of multifocal osteosarcoma：6 cases reportZHANG Zeng-liang, LI Nan, CHEN Bing-yao, SONG Guang-ze, WANG Shuo, WEI Xing627-6318Percutaneous pedicle screw ifxation combined with minimally invasive lumbar interbody fusion in the treatment of lumbar degenerative diseaseHE Er-xing, GUO Jing, CUI Ji-hao, GUO Zhi-yong, YIN Zhi-xun, LI Chuang, TANG Cheng, HE Yi-qian, LIU Cheng-wei632-6389An analylsis on the quality of life after personalized kyphosis correction in ankylosing spondylitisQI Peng, SONG Kai, ZHANG Yong-gang, WANG Yan, CUI Geng639-64310Video-assisted thoracoscopic anterior spine release combined with posterior correction in the treatment of adolescent idiopathic scoliosisWANG Lei, SONG Yue-ming, LIU Li-min, GONG Quan, KONG Qing-quan, LIU Hao, LI Tao, ZENG Jian-cheng644-64811A study on the effectiveness and safety of tranexamic acid to reduce blood loss during the perioperative period of total hip arthroplastyWANG Hao-yang, KANG Peng-de, PEI Fu-xing, YANG Jing, SHEN Bin, ZHOU Zong-ke, MA Jun, HUANG Qiang, SHI Xiao-jun649-65412Traditional pedicle screws versus cement-augmented pedicle screws in osteoporotic spine surgery：a comparative clinical studyFAN Yong, YANG Hong-jun, LEI Wei, WU Zi-xiang, YAN Ya-bo, ZHANG Yang, SANG Hong-xun655-66013Pedicle screw placement treated cervical lateral lordosis deformity in muscular dystrophy：1 case reportHU Yong-kai, WANG Yu, LI Chun-de, LIU Hong, LI Hong, YI Xiao-dong661-66414Progresses of surgical treatment for the cervicothoracic spinal primary malignant tumorsLI Dong-yue, LIU Xiao-guang, LIU Zhong-jun665-66815Research status of proximal junctional kyphosis after scoliosis surgeryPAN Ai-xing, HAI Yong, CHEN Xiao-long, GUO Hui668-672 