1Blood loss and limb circumference changes in patients undergoing unilateral total knee arthroplasty after intra-articular injection of tranexamic acid:a randomized controlled trialMa Jin-hui, Sun Wei, Gao Fu-qiang, Wang Yun-ting, Li Zi-rong5577-55822Simultaneous bilateral versus unilateral total knee arthroplasty in treatment of knee osteoarthritisYe Chuan, Liu Ri-guang, Tang Jin, Li Jiang-wei, Zhang Tao, Ren Hou-xiang, Sun Qi, Wu Cheng, Zhao Bao-ping5583-55883Safe range of artificial acetabular cup installation angle for different head-neck ratiosZhang Zhen-hua, Sun Fu-jie, Hu Ke-zheng, Nie Wen-bo, Wang Ming-xing5589-55944Large-diameter ceramic head articulation against highly cross-linked polyethylene in young patients:2-year wear rateSun Jiu-yi, Fu Pei-liang5595-55995Mid-term results of Zweymüller SLR-plus? stem used in hip revisionLi Peng, Zhu Zhi-qi, Hou Ming, Shi Zhan-jun5600-56056Autologous iliac bone graft and plate fixation in the repair of tuberculosis of the thoracic vertebraHuang Jiang, Yang Yuan, Lin Chun-bo, Li Xiao-feng5606-56107Proximal femoral nail anti-rotation versus dynamic hip screw in the repair of intertrochanteric fracture in the elderlyXu Hou-gao5611-56158Lateral locking combined with medial support plate versus double support plate for repair of tibial plateau fracturesMa Yun-hong5616-56219QWIX screw fixation in repair of patellar fractures:continuous dynamic and static pressure in the broken ends of the bonesLiu Jie, Gao Shi-chang, Liang An-lin5622-562610Combination of plate screw and Steinmann pin in repair of comminuted calcaneal intra-articular and posterosuperior fracturesLi Guang-feng, Wu Xian-min, Wang Si-cheng, Yang Guo-qing, Zhang You-zhong, Cao Zhong-hua, He Guo-yun, Yin Zhi-feng, Yang Xiao-yu, Zhang Xin, Peng Yong5627-563211Inhibitory effect of ulinastatin on osteoclast activation and the relationship of ulinastatin to matrix metalloproteinase-2 and matrix metalloproteinase-9:potential of preventing prosthetic osteolysisRu Jiang-ying, Zhao Jian-ning, Guo Ting, Yu Lei, Ding Hao, Jiang Hui5633-563912Construction of three-dimensional finite element model with lateral mass screw fixation following lower cervical three-segment laminectomySong Ming-zhi, Dong Chao, Li Dan, Ma Kai5640-564613Posterior vertebral column resection osteotomy combined with step correction in treatment of stiff angular kyphosis:a biomechanical analysisMa Hua-song, Wang Xiao-ping, Tan Rong, Chen Zhi-ming, Lu Ming, Yuan Wei, Xu Qi-ming, Ren Dong-yun, Ma Wei, Li Long, Zhang Jing, Zheng Rui, Xin Xin5647-565314Sextant percutaneous pedicle screw fixation for correcting single-segment thoracolumbar fracturesMing Jiang-hua, Zheng Hui-feng, Zhao Qi, Chen Qing, Wang Gang5654-565915Accuracy of screw placement in child’s thoracic pedicle assisted by digital navigation templateZhang Shao-jie, Wang Xing, Shi Jun, Chen Jie, Ma Shi-feng, Wang Jian, Li Zhi-jun, Zhang Yuan-zhi, Liu Hong-wei5660-566516Clinical results of pedicle screws with cement augmentation for treating lumbar degenerative diseases in the elderlyChen Rong-guo, Dai Feng-lei, Ou Xian-feng, Yang Chao, Qian Jian-ji, Zeng Yi, Ren Jia-yun, Yu Ze-long5666-567017Hollow pedicle screw fixation with minimal access-posterior lumbar interbody fusion for lumbar disc herniationLi Cheng-guo, He Er-xing, Ling Qin-jie5671-567518Bone cement kyphoplasty for repair of rheumatoid arthritis combined with Kümmell’s disease:a follow-up addressing vertebral height and spinal stabilizationWang Jing-liang, Pi An-ping, Xin Zhi-qiang, Yu Bao-xin, Wang Jian-wen, Ye Yong-liang, Pan Meng, Zheng Quan-xin5676-568019Application of titanium miniplate to posterior cervical laminoplasty:a short-term follow-upXie Bai-zhen, Hua Qiang, Zhao Hui-yi5681-568620Relationship between bone structure parameters in lower lumbar spine and lumbar disc herniationLin Zhi-jun, Li Yu-mao, Xie Xiao-yong, Li Ping-sheng, Li Tian-ran, Liu Ai-hua, Liu Hang-tao5687-5692 