1Emphasis on clinical and basic research of femoroacetabular impingementHUANG Gong-yi405-4072Management and safety evaluation of perioperative comorbidities in patients older than 75 years old undergoing hip arthroplastyZHANG Qing, YANG Jing, PEI Fu-xing, SHEN Bin, KANG Peng-de, ZHOU Zong-ke408-4133Impact of joint capsule reconstruction on the functional prognosis in total hip arthroplastyLIU Jin-zhao, JIANG Ning, GAO Peng, YU Teng-bo, SUN Kang, QI Chao414-4184Application of jumbo cups for acetabular deficiencies in hip revision procedures used in acetabulum defects of the hip revision proceduresWANG Bei-yue, ZHOU Li-wu, ZHANG Zhi-qiang, GUO Ting, ZHAO Jian-ning419-4235Rapidly destructive hip osteoarthritis：5 cases reportYAO Li-bing424-4286A prospective and comparative study of either physiotherapy along or accompanied arthroscopic surgery for degenerative meniscal tearsFU Dong, SHAN Lian-cheng, CAI Zheng-dong, LI Guo-dong429-4327Effects of psychological and spiritual factors on functional recovery and life quality after total knee arthroplastyHE Ming, ZHU Jin-yu, WANG Ren, ZHONG Xiao-peng, ZHU Qing-sheng433-4388Diagnosis and treatment of intraarticular synovial hemangioma of the knee under arthroscope：8 cases reportZHAO Hong-bo, ZHOU Hong-yan, CHEN De-sheng, DAI Shi-feng, LI Xue, ZHANG Qian439-4429Advances in the research of the diagnosis and treatment of femoroacetabular impingementXIONG Yuan, ZHAO Zhen-guo, ZOU Liang, BAO Tong-zhu443-44610Etiology of the chronic pain after artiifcial hip and knee replacementXU Yuan-kun, KE Yan, LIN Jian-hao446-45011Effects of wear particles on periprosthetic tissuesZHOU Yong-fei, SONG Ke-guan451-45512Research progress of excessive lateral pressure syndromeZHANG You-lei455-45913Comparison of the surgical results in the patients with degenerative spondylolisthesis and isthmic spondylolisthesisHUANG Wei-guo, HAI Yong460-46514Fusion of the accessory and primary navicular bones for painful type II accessory navicular bone：16 cases reportHUANG Ye, JI Song-jie, DU Hui, GU Jian-ming, ZHOU Yi-xin466-46915Diagnosis and operative treatment of bone infarctionZHANG Yao, ZHAO De-wei, WANG Wei-ming, LIU Yu-peng, YU Xiao-bing470-47316Diffuse idiopathic skeletal hyperostosis with dysphagia as the main manifestation：1 case reportYANG Pu-shan, ZHANG Chao, HE Qing, WEN Tian-yong, WANG De-li, WU Jian-hong, RUAN Di-ke474-477 