1To be well aware of the importance of the meniscus, and to improve the level of meniscal repairZHANG Ya-dong242-2442Arthroscopic debridement for knee osteoarthritis accompanied by meniscus injuries：85 cases reportSHI Jian-hui, L Wei, WANG Yan, MA Ben, CUI Wei, LIU Zhen-zhong245-2473Arthroscopic central meniscectomy and peripheral suture for discoid lateral meniscal tears in childrenXU Qing-lei, LI Fei, HAN Guo-yi, WANG Bin248-2514Arthroscopic meniscal repair with FasT-Fix suture device:a ifve-year follow-up reportZHANG Jie-hong, FU Pei-liang, WU Yu-li, ZHU Yun-li, QIAN Qi-rong, WU Hai-shan252-2555Arthroscopic hybrid suture technique for repairing bucket-handle tears of the medial meniscus：23 cases reportYUAN Shuai, ZHU Yun-li, WU Yu-li, FU Pei-liang, ZHU Jun, WU Hai-shan256-2606Arthroscopic treatment for horizontal tears in the anterior horn of the lateral meniscus using an assistant medial approachYU Zhi-yi, ZHENG Jia-peng, LIAN Ke-jian, LIANG Jin-ying, CHEN Zhi-da261-2637A meta-analysis of the clinical outcomes of hip arthroplasty and internal ifxation for displaced femoral neck fractures in the elderlyLIU Bing-gen, PANG Qing-jiang264-2718An analysis of early curative results of simultaneous versus staged total hip arthroplasty for hip joint ankylosisCAO Can, YANG Jing, PEI Fu-xing, SHEN Bin, ZHOU Zong-ke, KANG Peng-de272-2759Total knee arthroplasty in the treatment of pigmented villonodular synovitisXU Fu-sheng, QI Wei, LI Huan-yi, KE Rong-jun, GU Yong-fu, LIU Fang-gang276-27910A study on the ectopic osteogenesis experiment of bone morphogenetic protein active polypeptide combined with hydroxyapatite and poly lactic acid in ratsWANG Shuo, XIE Hui-min, GAN Shao-lei, REN Wei-wei, CHEN Bing-yao, ZHANG Zeng-liang, WEI Xing280-28711Differences in the lfexion-relaxation ratio of the erector spinae in the patients with different subtypes of low back painHU Yuan, TANG Jin-shu, QIN Jiang, SHI Xiu-xiu, ZHU Jia-liang, HOU Shu-xun288-29012A comparison of bone cement distribution with different puncturing guiders in vertebroplasty in calf vertebral osteoporosis modelsYAO Fu-dong, LIU Xia-jun, WANG Xin-hu291-29413Impacting bone grafting with and without concentrated bone marrow mononuclear cells for osteonecrosis of the femoral headWANG Liang, LIU Shu-bin, LIU Yao-sheng295-30114An exploratory study of second-line treatment of bone pain in the patients of metastatic breast cancer with a loading dose of ibandronateWANG Ru-liang, TIAN Ji-zheng, ZHANG Shao-hua, WANG Tao, BIAN Li, SONG San-tai, JIANG Ze-fei302-30515Discoid lateral meniscus and knee osteoarthritisFU De-jie, GUO Lin, YANG Liu306-30916Research progress on anterior cruciate ligament lesions with concurrent meniscal tearsTANG Cong, HUANG Chang-ming, FAN Hua-qiang309-31417Research progress on the effects of low patella on the occurrence of patellofemoral arthritisL Li-tao, XIE Xing-wen, GU Yu-biao, HUANG Jin, WANG Chun-liang314-31618Signiifcance of serum procalcitonin in the detection of early infections after total knee arthroplastyYAN Li-wei, WANG Wen-bo, LI Zhao-xu, XU Rui-feng317-31919Clinical significance of pathogenic bacteria after the postoperative infection of total joint replacementGAO Chuan-bo, YUAN Shao-hui319-32320Research progress on the relationship between expressions of aquaporins and arthritisFENG Fang-fang, YU Chao, TAN Chun-jiang, CHEN Wen-lie, CHEN Sai-nan323-327 