1Posterior stabilized knee prosthesis of different types：comparison of intercondylar osteotomy amountWeng Jian-hao, Xu Jie, Zhu Qi-qi, Xue Rui-qi, Li Deng, Cai Zhi-qing, Huang Yu-lin, Ma Ruo-fan6233-62392Construction of a rabbit model of knee prosthesis infection：environmental factorsin vivo affect Staphylococcus epidermidis and biofilmsShen You-liang, Zhu Tong-e, Zhang Jing-jing, Qi Chao, Yu Teng-bo6240-62453Unisex total knee prosthesis：gender and therapeutic effectsDing Chun-ming, Teng Xue-ren, Tan Hong-lue, Zhou Guang-dong6246-62504Knee arthroplasty for treating degenerative femoral intercondylar fossa impingement syndromeChen Hui, Wang Qun, Yan Shuang-xi, Dong Tian-yun, Zou Hai-bing6251-62555Analgesic scheme and safety after total knee arthroplastyWang Rong-guo, Qi Dun-yi6256-62616Strategy of using a tourniquet in simultaneous bilateral total knee arthroplastyGong Ke, An Xiao, Zhang Qi, Dong Ji-yuan6262-62677Zweymüller spiral acetabular prosthesis for treating developmental dysplasia of the hip in adultsWu Jian, Wang Bing, Yao Li6274-62808Stability of femoral prosthesis after total hip replacementSha Li-rong, Wang Tong-yu6281-62859Qiangguyin strengthens periprosthetic bone density after hip arthroplasty：a randomized controlled half-year evaluationJian Zhi-fei, Sun Wei, Cao Hong6286-629010Mobi-C cervical disc replacement：a five-year follow-up report in 19 casesBao Da, Ma Yuan-zheng, Chen Xing6291-629511Pedicle screw fixation with bone cementversus pedicle screw fixation alone for L1 compression fracturesYalikun?Yasen6296-630112Polyetheretherketone cage for treating type II and type IIa Hangman’s fractures：6-month follow-upHuang Yang-liang, Zhong Yi, Liu Shao-yu6302-630813Biomechanical properties of bone cement injectable canulated pedicle screwLong Hai-bin, Sun Gui-sen, Wang Wei-guo6309-631414Pedicle screw fixation for treating thoracolumbar fracture：related factors influencing vertebral height restorationGui Zhong-shan, Xu Xiao-feng6315-632015Minimally invasiveversus open posterior lumbar interbody fusion for single-segment degenerative lumbar disease：the rate of interbody fusionGuo Xi-min6321-632616Semi-restricted non-fusion system (Cosmic) in the treatment of lumbar degenerative disease：mid-term follow-up outcomesLi Er-nan, Kuang Zheng-da6327-633217Feasibility of lateral-position pedicle screw placementvia combined anterior-posterior approaches in spinal surgeryWang Xiao-ming, Duan Hao, Xia Bin, Wei Jian-min6333-633818Different implants for unstable intertrochanteric fractures in senile patients：biocompatibility characteristicsZeng Hao, Liu Zhong, Wu Feng6339-634419Proximal femoral nail anti-rotation and dynamic hip screw for treating intertrochanteric fractures in the aged patients：hip functionWu Xian-hong, Liu Jia-su, Ding Xue-ming, Liu Chuan-jiang6345-634920Bilateral external fixation combined with limited internal fixation in the repair of open fractures of middle and distal tibia and fibula：reliable fixation on the broken endsLiu Jian, Tian Bao-fang, Wang Wen-zhu, Zheng Wei-dong, Feng Li, Du Bao-yin, Tian Da-wei6350-6354 