1Methods and strategies of application of percutaneous spinal endoscopic technology in treatment of lumbar disease and traumaLI Quan-yi, YAN MingFORUM FOR EXPERTS481-4832Effect of percutaneous vertebral balloon angioplasty in treatment of osteoporotic compression fracture of thoracic and lumbar vertebrae at different operation timeYANG Jun-long, LIU Zhi-xiang, LAI Zhen, ZHANG Zhao-feiORIGINAL ARTICLES484-4873Effect and clinical advantages of internal fixation combined with vertebroplasty in the treatment of spine fractureZHANG Wei, ZHAO Han-ke, XU Cheng, HUANG YeORIGINAL ARTICLES488-4914Hinged external fixator combined with internal fixation in the treatment of complex elbow fracturesHENG Li-song, ZHU Yang-jun, ZHANG Kun, ZHANG Jun, DUAN Hong-haoORIGINAL ARTICLES492-4955Surgical treatment of old thoracolumbar fracture with kyphotic deformity through posterior pedicle subtraction osteotomyZHENG Jia-zhuang, ZHANG Zhi, CHEN Yu, WANG Fan-dong, CAI Qi-lin, LIU Yuan-binORIGINAL ARTICLES496-4996Clinical application of the guide pin locating device in proximal femoral nail antirotationWEI Xiao-hua, HAN Yu-zhuo, LIAO Zhi-feng, CHEN Pu, YE Xu-biaoORIGINAL ARTICLES500-502,5077Application of ultrasound-guided combined lumbar plexus and sacral sciatic nerve block in internal fixation of femoral neck fractureZUO Dong, ZHOU MinORIGINAL ARTICLES503-5078Clinical application of 3D printing technique in surgical treatment of Sanders Ⅱ&Ⅲ type calcaneal fractureCHEN Ke, PAN Zhen-yuORIGINAL ARTICLES508-5129Effect of damage control surgery principle in the treatment of severe multiple injury combined with flail chestWEI Tan-ming, YAN Jing-huangORIGINAL ARTICLES513-51610Curative effect evaluation of lateral scapula border approach on scapula neck and body fractureYANG Hai-qing, DUAN Hong, CHEN Yi, ZHOU Zhao-wenORIGINAL ARTICLES517-51911Comparison of joint function of external fixator combined with Kirschner wires and locking compression plate in patients with intra-articular fractures of distal radiusCHEN HuORIGINAL ARTICLES520-52312Clinical effect of bone graft combined with oblique T-plate fixation in the treatment of elderly patients with unstable distal radius fracturesYU Lei, ZUO Jin-bu, LIANG Hong-wei, SUN Ye-zhi, A Yi-nu-er, ZHAO Bin, WANG WeiORIGINAL ARTICLES523-52713Clinical research of arthroscopic treatment of acute anterior cruciate ligament injuryLIU Xin-wei, LIU Song-bo, LIU Ming, WANG Yu, LIU Xian-minORIGINAL ARTICLES527-52914Analysis of risk factors for prolonged ICU time in multiple trauma patientsDENG Yi, CHEN Xiao-meiORIGINAL ARTICLES530-53215Impact of the ratio of neutrophil to lymphocyte on the injury severity and prognosis in multiple trauma patientsYANG Wei, GUO Guang-liangORIGINAL ARTICLES533-53616Treatment of epidural hematoma straddling transverse sinus with modified supra-and infra-tentorial approach537-53817Anatomic radial head arthroplasty in unstable Mason III radial head fractures538-53918Clinical comparative study of the treatment of discoid meniscus injury by arthroscopic meniscus resection and surgical suture539-54119Effect of MIPPO technique on the healing rate and time of tibia fracture542-54320The clinical effect of bone movement technique for chronic osteomyelitis of tibia accompanied by long bone defect544-545 