1Preoperative design and clinical application of TKA assisted by CAD combined with 3D printing navigation templatesDING Huanwen, MIAO Qiuju, LIU Huiliang, WANG Hong, TU Qiang, CHEN Jiarong, HUANG Minqiang, TENG QiangClinical Research261-2682Clinical application of traction exercise cervical gear for cervical spondylopathyXIAO Liangxing, LI Youyu, JIANG Zeping, GUAN HonggangClinical Research269-2733Early clinical effect of ISOBAR TTL dynamic fixation for the treatment of multi-level lumbar degenerationFENG Xuefeng, ZHANG Kai, TU Qiang, ZOU WeiminClinical Research274-2794Treatment of anterior cervical zero-profile interbody fusion and fixation device for cervical spondylosisSHEN Jianjian, JIANG Zhiqiang, LI Ying, CHANG Xudong, MEI Pingjun, GONG Huisong, LV Zhenjing, YUAN BinbinClinical Research280-2855Comparison of clinical effects of single-level cervical disc replacement by Activ-C versus Bryan artificial disc in the treatment of cervical spondylosisSUN Wenxing, WANG Yuqiang, MEI WeiClinical Research286-2926One-stage necrotic bone curettage combined with vancomycin-loaded calcium phosphate cements implantation for the treatment of chronic hematogenous osteomyelitisWU Shengchao, HE Zike, YU Peng, ZHANG Haohao, LI Qiang, WANG ShangzengClinical Research293-2987Application of precise osteotomy in total knee replacement of knee osteoarthritisCAI Jian, CHEN LupingClinical Research299-3048Experimental study of percutaneous vertebroplasty combined with 125I seeds implantation in treating spinal metastatic tumor:the effect of bone cement on particle radiationWU Meixiang, CHEN Cuiling, FU Yimin, GUO Jing, YIN Zhixun, HE Erxing, CHEN Ping, BAI BoBasic Research305-3099Appliance of virtual reality in orthopedic pre-operation planningZHENG Chaoshun, LI ChunhaiReview310-315