1Diagnosis and treatment of medial clavicular fracture with lateral clavicular plate inversion without transarticular fixationSHI Qiang, LI Xiang-xiang, LI Chuan-feng, ZHAO KunTrauma161-1662Finite element analysis of proximal femoral bionic nail with modified crossing points for intertrochanteric fractureWANG Zhong-zheng, ZHU Yan-bin, CHENG Xiao-dong, LI Yong-long, YANG Zhen-bang, WANG Yu-chuan, TIAN Hua, ZHANG Qi, CHEN Wei, ZHANG Ying-zeTrauma167-1723Treatment of avulsion fracture of posterior cruciate ligament at tibial plateau with small transverse popliteal fossa incision:a report of 23 casesZHANG Lei, LI Hao, CHEN FengTrauma173-1784Comparison of therapeutic effects between double tension band steel wire and hollow tension screw in the treatment of tibial tubercle avulsion fractures in adolescentsLIU Zhi-cheng, WANG Sheng-ying, WANG Ying-huaTrauma179-1835Clinical characterization and prognostic study of multicenter traumatic osteomyelitis of the extremitiesZHANG Ru-qi, ZHANG Le, LIU Ze-min, LI Chao, WU Wei-wei, ZHANG Yong-hongOriginal article184-1896Effects of total knee arthroplasty on postoperative pain and function of rheumatoid arthritis patients with no tourniquetZHOU Hai-bo, MA Cheng-hao, HAN Da-peng, WANG Hao, DING Hao-yuan, OUYANG Gui-linOriginal article190-1947Effect of platelet-rich fibrin on the proliferation and differentiation of rat epiphyseal plate chondrocytesJIA Sai-xiong, LI Chun-ye, HONG Yi-xia, WENG Qi-wen, WU Di, LONG Hai-quan, CHEN Jin-renOriginal article195-2008Comparison of Rades score and Tomita score in predicting the prognosis of patients with spinal metastasisWANG Ya-ling, ZHANG Rui, PENG Guo-lin, JIANG Xin-ting, ZHANG Yu-rongClinical research and practice201-2089The difference of facet joint morphology in lumbar spinal stenosis with or without degenerative spondylolisthesisGAO Ze, LI Kai, XUE Xu-hong, WANG Shi-xiong, ZHANG Yan-dong, LI Yuan-wei, XI Fan-huiClinical research and practice209-21810circRNA regulates osteogenic differentiation of bone marrow mesenchymal stem cells via ceRNA mechanism in osteonecrosis of the femoral headLIU Ke-xin, LIU Kai, DONG Mei, WANG Jian-zhongReview219-22411Research progress on the role of immune system in different types of osteoporosisLI Zhao-xia, ZHANG Xiao-feng, XU Xi-lin, LIU Jiang-yanReview225-23012The function,mechanism and clinical treatment of exosomes in intervertebral disc degenerationMIAO Hong-yan, FENG Jing, LIU Wei, DU Shi-yang, YANG Ruo-peng, YIN Zhi-yuan, XIAO Zi-jun, XU LeiReview231-23613Brucellosis with hip arthritis and sacroiliitis as the first symptoms:a report of one caseZHANG Qiang, XIA Lu, DENG Wei-zhe, SHI Guo-yang, QIAN Chun-shengCase report237-240 