1Enhanced recovery after surgery: current and future practice directionsKANG Peng-de, PEI Fu-xingEditorial721-7222Multidisciplinary evaluation and management strategy of perioperative coexisting cardiovascular disease in enhanced recovery after orthopedic surgeryHUANG Qiang, LIAO Ren, FENG Yuan, ZHOU Zong-ke, XU Hong-wei, TU Zhong-qi, XU Yuan-ning, LIU Hao, YANG Jing, PENG Yong, JIANG Ying-ying, ZHOU Leng, LI Jian, WANG Guang-lin, KANG Peng-de, CHEN Mao, LIU Bin, PEI Fu-xingEnhanced recovery after surgery723-7293Adductor canal block combined with IPACK block after total knee arthroplasty: a randomized controlled trialWANG Qiu-ru, WANG Bao-wei, YANG Jing, KANG Peng-deEnhanced recovery after surgery730-7364Perioperative blood transfusion management in total knee arthroplastyHUI Zhan-qiang, JIA Dong-dong, TIAN Hong-qiang, WANG Li-li, ZHANG Pan, WANG Li-chuanEnhanced recovery after surgery737-7405Effects of perioperative low-dose senna on gastrointestinal function recovery after total hip / knee arthroplasty under the concept of ERASZHAN Yu-jia, XU Hong, LIU Li, TANG Ting-ting, HUANG QiangEnhanced recovery after surgery741-7456Effectiveness of enhanced recovery after surgery on primary unilateral unicompartment knee arthroplastyZHANG Qi-dong, LIU Pei, LU Fei-fan, HUANG Cheng, DING Ran, WANG Bai-liang, LIU Zhao-hui, CHENG Li-ming, WANG Wei-guo, GUO Wan-shouEnhanced recovery after surgery746-7517A clinical study on the treatment of recurrent patella dislocation with arthroscopic reconstruction of medial patellofemoral ligament combined with lateral retinacular releaseXIONG Bing-lang, LIN Tian-ye, YANG Peng, XU Jing-li, ZOU Qi-zhao, LAI Qi-zhong, ZHANG Qing-wenOriginal article752-7578Matrix metalloproteinase-9, matrix metalloproteinase inhibitor-1, and their ratio in the severity evaluation of knee osteoarthritisKANG Bo-yin, WU Yuan-junOriginal article758-7619A comparative study of intermuscular Dynesys dynamic fixation with small incision and fusion in the treatment of lumbar disc herniationZHANG Zhi-cheng, ZHANG Yang, ZHANG Li-zhi, DU Pei, LI Fang, SUN Tian-shengOriginal article762-76610Molecular pathogenesis of ossification of the ligamentum flavum: Runx2 and other related factorsCAO Bing, CHEN Xiong-shengReview767-77111Treatment progress of osteosarcomaCAO Li-li, ZHU Yan, FAN Gen-tao, ZHANG Jun-liang, ZHOU Xing, ZHOU Guang-xinReview771-77812Intralesional methylprednisolone injection for bone Langerhans cell histiocytosis in childrenCHEN Bing-yao, WEI Xing, SONG Guang-ze, ZHANG Zeng-liang, ZHANG Ying-long, FENG Li-liClinical research and practice779-78213Application of three-dimensional printing in the teaching of spine deformityGUO Ji-dong, ZHAO Yan-tao, CHEN Qiao-ling, LI LiClinical research and practice783-78514Comparison between oral and intravenous tranexamic acid in total knee arthroplasty: a prospective randomized controlled trialWEI Rong, ZHAO Mian, ZHENG Chong-mingClinical research and practice786-79015Meta-tan in the treatment of multiple bone fibrous dysplasia with proximal femoral pathologic fracture of the lower extremity: a case reportGUO Guang-xin, SUN Ying, LUAN Hai-peng, YAN Xiao-long, CHEN Dong-feng, GUAN Dong-huiCase report791-79316Radiographic characteristics and clinical significance of varus posteromedial rotatory instability of the elbowBAO Fei-long, ZHAO Zhi-hui, KANG Shi-jie, HUANG Dong-sheng, JIANG Tao, LIU TaoUniversal health gears up for a well-off society794-800 