1Diagnosis and management of closed mallet finger injuriesChen Yan, Xing Danmou561-5642Establishment of rabbit model of open bone defect of limb caused by gunshot wound com-bined with seawater immersionChen Xiaosong, Zhang Gan, Liu Shengjie, Wang Zhi, Chen Congcong565-5693Application of three-dimensional quality evaluation model in perioperative nursing of mini-mally invasive repair of acute Achilles tendon rupture caused by military training injuryDong Dandan, Xu Huiling, Wei Shijun, Liu Ximing, Lian Junhong570-5744Clinical significance of changes in plasma soluble thrombomodulin levels in patients with post-abdominal trauma complicated by sepsisYang Xinwen, Zhang Yang, Tang Li575-579,5885Systematic review and meta analysis of risk factors for death in ICU patients with severe sepsisXiang hongli, Liu Yuxin580-5886Pathogeny analysis and construction of a predictive model for surgical site infection after in-ternal fixation in patients with traumatic lower extremity fracturesLuo Xiaohong, Zhu Hong, Ye Licong589-5957Fracture of the lower pole of patella:a new minimally invasive treatment and analysis of its clinical efficacyWang Haipeng, Liang Lizhuo, Wang Pu, Chen Chuiji, Dong Chuan, Ma Baoan, Wang Yucai596-6018Application of closed reduction and internal fixation in the treatment of humerus surgical neck fractureDeng Tingting, Zhang Li, Chang Shan602-6069Refractory ulcer of extremities in the elderly repaired by the V-Y flap advancement based on perforatorsZhang Tianhao, Lin Jian, Wang Zhijiang613-61810Comparative study on the efficacy of 3D printing personalized brace and hinged brace in the treatment of medial collateral ligament injuryLi Jiahao, Liu Sen, Shi Bo, Zhang Yongdi, Zhu Chaohua, Jia Guoxing, Dong Wei619-624,62911Research progress of repair and surgical treatment for clavicular defectLi Da, Zhao Feng, Yang Peiwei, Lin Shuyu630-63312Application status and prospect of 5G technology in the construction of trauma emergency sys-temZhang Shuangting, Wang Tao, Zhang Xingwen634-638,封3 