1Total hip arthroplasty: strive to be minimally invasive, yet have to assure the operative qualily and safetyLI Zi-rongEditorial641-6432Research progress on robotic-assisted unicompartmental knee arthroplastyFU Jun, CHEN Ji-yingSpecial article644-6483A analysis of complications in the first 100 cases with hip arthroplasty by the direct anterior approachGUO Wen-li, JIN Tao-ran, LI Hao, ZHENG Lian-jieJoint surgery649-6544Treatment of acute hematogenous periprosthetic joint infection following total hip arthroplasty with debridement and prosthesis retentionSONG Xing-gui, CHAI Wei, LI Xin, NI Ming, CHEN Ji-yingJoint surgery655-6605Arthroscopic release around the greater trochanter in gluteal muscle contractureTANG Xiang-yu, LI Chun-bao, LIU Yu-jie, SHEN Xue-zhen, CHANG Han, LU Ming, LIU Yu-fengJoint surgery661-6646Short-term effectiveness of arthroscopic anterior cruciate ligament reconstruction using hamstring tendon allograft with remnant preservationZHANG Zhen-jun, HE Ming, BAI Lun-haoJoint surgery665-6687Minimally invasive total hip replacement with Super PATH approach: 14 cases of early follow-up reportZHU Cheng-dong, QIAO Gao-shan, ZHU Le-yin, YIN Wen-cai, XIA Jian-zhong, HUANG Hua, XIA Zheng-rong, QIAN JunJoint surgery669-6738A study of acetabular labrum repair on clinical effects of periacetabular osteotomyZHANG Hui-liang, LUO Dian-zhong, CHENG Hui, ZHANG HongClinical research and practice674-6789A biomechanical analysis of the annular groove on the bone - cement interfaceSHEN Guo-qi, ZHANG Chun-linClinical research and practice679-68510Effectiveness and safety of topical tranexamic acid in total hip arthroplasty: a meta-analysisSHANG Yi-mei, LIU Ming-ting, XU Chuang, WANG Jian-ming, REN Qiang, LI Jian, DU Chang-lingMeta-analysis686-69111A mortality and complication analysis of cemented and uncemented hemiarthroplasty for displaced femoral neck fractures in elderly: a Meta analysisWANG Song, SUN Qian, ZHENG Xin, PANG Yong, ZHAO Feng-chao, GUO Kai-jinMeta-analysis692-69812Treatment of chronic instability of the acromioclavicular joint with autologous tendon reconstruction with suture anchor: a riport of 18 casesSUN Jun, PENG Zhang-jian, DAI Chong-hua, GU Xin-fengOriginal article699-70113Risk factors of kyphosis recurrence after implant removal in the treatment of thoracolumbar burst fractures with posterior short-segment fixationSUN Xiang-yao, ZHANG Xi-nuo, HAI YongOriginal article702-70814Treatment of floating knee injuries in childrenYU Tie-qiang, ZUO Yu-ming, WANG Yue-guang, YI Fan, ZHANG Lei, LIAN Xiao-jing, LI Fei, WANG Jing, ZHAO JinOriginal article709-71215Research progress on the reasons of the middle and distal tibial fracture nonunionCHANG Wen-li, ZHANG Ying-ze, CHEN WeiReview713-71616Research progress of bone metastases from cancer of unknown primaryWANG Da, HU Jin-bo, LIU Yu-jie, HE Shao-hui, GONG Hai-yi, ZHANG Hao, XIAO Jian-ruReview716-720 