关键词: 腹壁, 机械特性, 各向异性, 腹白线, 腹壁肌

Abstract: Further discussion on the mechanical principle of abdominal wall -- clinical and thinking of anisotropy                CHEN Shuang，JIANG Zhi-peng. Department of Gastrointestinal and Hernia Surgery, the Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou 510655, China
Correspondence author: CHEN Shuang, E-mail: chensh2@mail.sysu.edu.cn 
Abstract    The physical characteristics of the abdominal wall, including stiffness, compliance, anisotropy, etc., are closely related to the realization of abdominal wall function, the principle and the effect of surgery. Among them, anisotropy refers to the difference in stiffness and compliance of the abdominal wall in different axial directions under the action of force, especially the transverse and the craniocaudal direction. This difference is related to the mechanical properties of abdominal wall muscles, fascia system, linea alba, etc. The anisotropy explains many clinical problems, including why the Keyhole procedure is prone to recurrence, why the linea alba should be protected, and how to close the abdominal wall defect. Therefore, in abdominal wall surgery, both surgical selection and repaired material design should be considered from the perspective of mechanical characteristics. Surgeons also need to improve their understanding in order to better understand, use and innovate abdominal wall surgery techniques.

Key words: abdominal wall, mechanical property, anisotropy, linea alba, abdominal muscles