1Chinese expert consensus on the surgical treatment of obesity combined with ventral abdominal wall hernia (2021 edition)China Hernia Society, Chinese Society of Surgery, Chinese Medical Association, Thyroid and Metabolism Surgery Group, Chinese Society of Surgery, Chinese Medical Association, Abdominal Wall Reconstruction Society, Committee of Clinical Practical Technology, China International Exchange and Promotive Association for Medical and Health Care, Chinese College of Metabolic and Bariatric Surgeons, National Health Commission Capacity Building and Continuing Education Center361-3662Current status and technical innovation of abdominal wall reconstruction and repair surgeryTANG Jian-xiong, LI Shao-chun, LI Shao-jie367-3703Mechanical law of abdominal wallCHEN Shuang, ZHOU Tai-cheng371-373,3784Reconsideration of staged step-up approach in treatment of patients with infected pancreatic necrosisSUN Bei, LI Guan-qun374-3785Reinterpretation of abdominal wall reconstruction from the perspective of biomechanicsLI Hang-yu379-3836The clinical significance of surgical plane in laparoscopic totally extraperitoneal inguinal hernia repairLI Jian-wen, YUE Fei383-3877Key points of treatment of complex abdominal wall herniaYANG Shuo, CHEN Jie387-3918Problems in reoperation of parastomal herniaFU Xiao-jian, YAO Qi-yuan391-3949Application of bridging repair technique in the repair and reconstruction of abdominal wall defectYANG Jian-jun, SONG Zhi-cheng, YANG Dong-chao394-39710Clinical analysis on the flap reinforcement of abdominal wall with "envelopped" mesh technique in 158 incisional hernia casesLI Shao-jie, MENG Yun-xiao, LI Shao-chun398-40111Biological-omentum-synthetic sandwich repair technique for huge abdominal wall defect repair and reconstruction: A therapeutic effect analysis of 23 patientsSONG Zhi-cheng, YANG Dong-chao, DONG Wen-pei402-40412Therapeutic efficacy of concurrent laparoscopic sleeve gastrectomy with ventral hernia repair : An analysis of 7 casesWU Li-sheng, LI Yu, YU Jian-wei405-40813Clinical analysis of laparoscopic type Ⅲ、 Ⅳ hiatal hernia repairSHAO Xiang-yu, CHENG Tao, JI Zhen-ling409-411,41414Surgical management for complicated parastomal hernia: A report of 18 casesREN Feng, ZHOU Jing-yu, ZHOU Jian-ping412-41415Prospective randomized controlled study of the effect of carbon dioxide pneumoperitoneum on acid-base balance during different laparoscopic inguinal hernia repairLIU Yu-chen, ZHU Yi-lin, CHEN Jie415-41816Indocyanine green fluorescence imaging laparoscopic segmental resection of intrahepatic bile duct benign obstructionCHEN Jiang-ming, PU Tian, XIE Qing-song419-42217Construction of prognostic nomogram of gallbladder cancer based on SEER databaseWANG Tao, XU Jun-ming423-42718Safety and efficacy of laparoscopic-assisted transversus abdominis plane (LAP-TAP) block for colorectal cancer surgeryYANG Yun, LI Dong-ming, ZENG Na428-43219Prognostic values of preoperative white blood cell related inflammatory markers in the patients with non-metastatic colon cancerHOU Wen-yun, WU Bin, LIN Guo-le433-437,44220Investigation and analysis of the participation in basic skill training of surgical residents of Zhongshan Hospital, Fudan UniversityCHEN Ling, YA Na, YU Qing438-442 