1Significance of femoral condyle parameters in osteotomy in unicompartmental knee arthroplasty and prosthesis designQi Jia-long, Yin Zong-sheng, Ma Guang-wen1221-12262Advantages of lumbar epidural anesthesia with ropivacaine in elderly lower limb joint replacement and implant fixationLi You-an, Wu Yong1227-12333Pedicle screw fixation with different approaches in treatment of thoracolumbar burst fracture：biocompatibilityHou Yu, Bu Hong-jian, Yang Fan, Wang Lin-jie, Wu Shi-ke, Li Pan-xiang, Liang Zhi-xing, Sun Bo, Shen Zhi-kun1234-12414Percutaneous pedicle screw internal fixation repairs single segment of thoracolumbar fracture：activity improvement during 12 months of follow-upZhang Qiang, Li Rui-long, Yang Liu-zhu, Li Zhao-fei, Luo Jin, Su Mou, Liang Da-di1242-12485Is vertebral fixation needed during minimally invasive percutaneous self-dilating pedicle in repair of thoracolumbar vertebral fracturesLiu Ji-jun, Wang Xin-wen, Wu Shu-fang, Feng Dong-xu, Wu Qi-ning, Hao Ding-jun1249-12546Open reduction fixation for treating ankle joint fractures：a wire anchor in the repair of triangular ligament injuryGao Wu-chang, Wang Ying-zhen1255-12607Three-dimensional finite element analysis of artificial femoral head replacement for unstable femoral intertrochanteric fracturesGuo Xin-qing, Zhao Wei-min, Zhou Hai-yang, Chen Meng, Wang Le-le, Ji Hong-liang1261-12678Effects of different materials on stress distribution and biomechanics of bone interface of artificial hip jointLi Ning-yuan, Gong Ya-li, Liu Xuan-wen, Zhou Qiang1268-12749Comparison of angular displacement and stress of adjacent segment disc treated with semi-rigid and rigid fixationLv Jian-hua, Tang Zhao-hui, Chen Kai, Li Ming, Zhang Qiu-lin1275-128110Effect of weight-bearing activity on the center of rotation in the lower lumbar vertebraeLiu Jia-nan, Xia Qun, Miao Jun, Li Hong-da, Wei Dong1282-128811Depth of pedicle screw into the vertebral body and its stability：a biomechanical analysisDu Wei, Qian Ming-quan1289-129412Necrosis of the femoral head treated by tantalum rod implant：three-dimension finite element analysisYang Bin-bin, Liu Yao-sheng, Liu Shu-bin1295-130113Computer assisted navigation in total knee arthroplasty：location and soft tissue balanceZhang Yong-zhan1302-130814Design of gun-form bone grafting apparatus and surgical simulationYin Zhi-yu, Yin Zhi-xun, He Er-xing, Lu Wei-jie1309-131415MRI measurement of nucleus pulposus volume to assess the influence of unilateral pedicle screw fixation with an interbody fusion cage on adjacent segmentZhang Hong-jun, Wang Qun-bo, Huang Wen-qiang, Li Bo, Yu Yu, Shao Gao-hai1315-132116Application and safety of tranexamic acid in total knee arthroplastyLin Ye, Zhang Guo-liang, Wang Yue-wen1322-132817Relationship between implant fixation and fracture displacement after floating shoulder injuryCao Yao-wei, Yu Guo-rong, Yu Li, Jiang Liang-bo, Guo Yong-chun, Zhao Xing1329-133518Is autologous blood transfusion drainage necessary after total knee arthroplasty：a meta-analysisLuo Ming-hui, Hong Kun-hao, Pan Jian-ke, Liu Jun, Yang Wei-yi, Guo Da1336-134419Discectomyversus interbody fusion for lumbar disc herniation with Modic change：a meta-analysisWang Wen-da, Jin Qi, Ruan Wen-feng, Ping An-song1345-135220System evaluation of unilateral and bilateral pedicle screw fixation and posterior lumbar interbody fusion in the repair of lumbar degenerative diseasesZhong Yuan-ming, Fu Shuan-hu, Li Zhi-fei, Wu Liang, Zhou Jin-yan, Mo Yi, Lu Da-han1353-1360 