1Current situation and thinking on early advanced osteosarcomaWANG ZhenEditorial321-3222A single-center epidemiology analysis of pelvic tumors in children and adolescentsZHU Dong-ze, FU Jun, LIU Dong, GUO Zheng, WANG Zhen, FAN Hong-binBone neoplasms323-3273Chemotherapy selection and prognosis analysis of osteosarcoma in the elderly: a single-center 5-year retrospective studyZUO Dong-qing, MU Hao-ran, SUN Meng-xiong, SHEN Jia-kang, WANG Hong-sheng, WANG Chong-ren, MA Xiao-jun, HUA Ying-qi, CAI Zheng-dongBone neoplasms328-3324Individualized revision of the prosthetic fracture after limb-salvage surgery for limb osteosarcomaZHAO Zhi-qiang, JIN Qing-lin, MO Xiao-lin, WANG Yong-qian, XIE Xian-biao, ZOU Chang-ye, YIN Jun-qiang, HUANG Gang, SHEN Jing-nanBone neoplasms333-3405Uncemented and cemented endoprosthetic reconstruction for bone defect after conventional distal femoral osteosarcoma resectionDU Zhi-ye, LI Da-sen, YANG Yi, TANG Xiao-dong, YANG Rong-li, GUO WeiBone neoplasms341-3476Single nucleotide polymorphisms ( SNPs ) associated with antiangiogenesis in tumor targeted treatment and potential application in osteosarcoma and soft tissue sarcomaZHU Tian-yi, SHI Wei-wen, WANG Jing, LINA Biekemuhemaiti, BAO Qi-yuan, SHEN Yu-huiReview348-3587Recent advances on single or double level anterior cervical discectomy and fusion with cervical collarSI Fang-da, TIAN Bao-peng, LIU Bao-ge, DING Yi, WANG DianReview359-3638Research progress on the relationship between acromion index and shoulder joint diseasesDONG Kang-kang, SUN ShuiReview364-3699Early clinical effectiveness of kineso taping with heat-free ultrashort wave in the treatment of ankle inversion sprain FAN Chen, FAN Ru, ZHANG Qian, SUN Hai-yan, HU Yuan, HOU Shu-xun, LI Hui-wen, TANG Jin-shuOriginal article370-37410Roles of astrocytes in different stimulus patterns of discogenic sciatic painYU Qian-jin, HONG Lei, YANG Xiao-xiong, LIN Bin, LI Wen-feng, TANG Jia-guangOriginal article375-38211Clinical efficacy of percutaneous endoscopic lumbar discectomy in the treatment of minimal lumbar disc herniationZHANG Hai-feng, ZHAN Xin-hua, FU Ze-ze, WU Jian-feng, FU QiangClinical research and practice383-39012A Meta-analysis of two surgical methods for Sanders type Ⅱ and type Ⅲ calcaneal fracturesLIU Ze-min, LYV Xin, ZHANG Jing, XU Xiao-Pei, ZHANG Chao, GUO Hua-nanMeta-analysis391-400 