1A comment on the multidisciplinary approach to limb salvage for osteosarcoma around the kneeZHANG Chun-linEditorial401-4032Segmental allograft reconstruction for diaphyseal bone defect after tumor resectionNIU Xiao-hui, DENG Zhi-ping, ZHANG Qing, HAO Lin, YU Feng, LI YuanBone neoplasms404-4083Clinical application and individualized selection of precision radiotherapy for spinal metastasesWANG Bing, YU Xiu-chun, XU Ming, ZHENG Kai, CHEN YuBone neoplasms409-4144Related factor analysis and management of failed tumor prosthesis in the distal femurHU Jian-ping, ZHU Kun-peng, ZHANG Chun-linBone neoplasms415-4205A systematic literature analysis of clinical curative effects of local recurrent osteosarcomaWANG Wen-jian, YU Xiu-chunBone neoplasms421-4276A retrospective analysis of short-term outcomes of limb salvage for malignant bone tumors around the kneeXUE Ying-sen, WANG Zhen, LI Xiao-bo, GUO Zheng, FAN Hong-binBone neoplasms428-4327Effects of Bruceine D on the proliferation, apoptosis and autophagy of osteosarcoma cellsZHENG Ying, WANG Gang-yang, CHEN Rui-ling, HUA Ying-qi, CAI Zheng-dongClinical research and practice433-4388A correlation study of Clarke angle and Chippaux-Smirak index with flatfoot deformityBAO Bei-xi, ZHANG Jian-zhongClinical research and practice439-4449A correlation analysis between clinical parameters and radiculopathy symptoms of adult degenerative scoliosisSUN Xiang-yao, ZHANG Xi-nuo, HAI YongOriginal article445-45010A retrospective analysis of the predictive effects of POSSUM and P-POSSUM on postoperative complication and mortality rates in hip fracture patientsLIU Hai-longOriginal article451-45411The clinical application of bone cement for special bone diseases in childrenXIA Tian, NING Bo, SONG Jun, PEI Xin-hong, WANG Da-hui, MA Rui-xueOriginal article455-46112A retrospective study of clinical characteristics and curative results of 16 children with Meyer dysplasiaFU Gang, WANG Yu-kun, ZHANG Jian-li, ZHU Zhen-hua, GUO YuanOriginal article462-46413Staging classification of osteonecrosis of femoral headSUN Wei, LI Zi-rongReview465-46814Progress of diagnosis and surgical treatment for medial collateral ligament sprain of the knee jointSUN Tie-cheng, Lü Song-cenReview469-47515The treatment of osteoid osteoma: the evolution from massive invasion to minimal invasion to noninvasionHUA Ying-qi, CAI Zheng-dongReview475-47716The treatment of osteoid osteoma according to the patients' conditionsDONG YangExpert's comment478-47917Image-guided noninvasive treatment as an effective method in the treatment methods for orthopedic diseasesWANG Han, ZHANG Gui-xiangExpert's comment479-480 