1Analysis of Risk Factors and Comparative Study of Life Quality of Proximal Junctional Kyphosis After Orthopedic Surgery of Old Thoracolumbar Fracture with KyphosisHu Xiaoming, Yu Haiyang, Zheng Guohui, Zhang Wei, Zhang Xu, Chai Zihao, Guan Yujun577-5832Study on the Position of Scapula in Patients with Degenerative Rotator Cuff Tear Based on Anteroposterior Radiographs of the ShoulderXie Lu, Zhang Yanming, Luo Dingyuan, Wang Weining, Wang Anran584-5893Comparison of the Effect of Two Surgical Methods in the Treatment of Senile Proximal Humeral Neer Four-Part FracturesYou Xiaojun, Zhang Yu, Ji Jinwei, Liu Haibo, Zhang Peipei, He Juren590-5954Application of Measuring Osteotomy Combined with Gap Balancing Technique in Total Knee ArthroplastyHu Yanhui, Song Da, Yuan Zhenfeng, Yang Yiqun, Wang Chaohai, Liu Yi596-6015Analysis of Prognostic Results of Two-Stage Surgical Treatment for Chronic Septic Arthritis of Hip And KneeShao Hongyi, Huang Yong, Zheng Hanlong, Zhou Yixin, Wang Liwei, Meng Lingfang602-6066Clinical Characteristics and Treatment Strategy of Tibial Plateau Fracture With Hyperextension and EversionWang Xiaogang, Xu Qiang, Zhang Qingyan, Su Longhui607-6107A Cadaveric Study of Cervical Spinal Nerve Roots to Improve the Keyhole Approach of Posterior Percutaneous Endoscopic Cervical DiscectomyXu Songjie, Chen Xueming, Zhao Peng, Jing Peng, Liu Li, Gao Yan611-6158Biomechanical Study on Fixation of Avulsion Fracture of Phalangeal Metacarpal Plate With Micro Hook PlateShang Xiaoqiang, Duan Xianglin, Wang Jun, Yang Ping, Zhou Xiangkun, Sun Wei, Tao Shengxiang, Zheng Zhou616-618,632