Abdominal wall, material, and mechanics

The abdominal wall is a dynamic mechanical system composed of multiple tissue layers, forming a "tension‑compliance" balance system through interlayer coupling. Its mechanical homeostasis serves as the foundation for maintaining abdominal organ function, and the core of hernia repair lies in reconstructing this balance via implanted materials. Starting from the abdo-minal wall mechanical microenvironment, the authors analyze the mechanical parameters of each layer of native tissues and their compatibility requirements for repair materials, and explore the impacts of dynamic loads such as breathing, postural changes, and sudden increases in intra-abdo-minal pressure on the materials. It emphatically elaborates on the mechanical interaction mechanisms at the material‑tissue interface, analyzes the elastic modulus matching, the stress shielding effect of the mesh and their potential long‑term adverse effects, as well as the coordination rules between the mechanical attenuation of degradable materials and tissue regeneration. It aims to provide a new direction for the development of hernia repair field, and help to improve patient prognosis and quality of life.