Mesh implants: An overview of crucial mesh parameters

Table 4 Essential properties of hernia meshes used for groin and abdominal wall hernia repair

Property	Recommendation
Tensile strength (abdominal wall)	22 N/cm (cranial/caudal )
	32 N/cm (lateral)
Tensile strength (groin)	16 N/cm
Elongation	20%-40%
Orientation	No specific orientation for meshes with isotropic properties
	For meshes with anisotropic properties: orientation in the appropriate direction to match the physiological stretchability
Pore size	Depending on the used raw material and the foreign body reaction, respectively. To achieve a high effective porosity: for PP meshes a pore size ≥ 1000 µm should be used; for PVDF meshes a pore size ≥ 600 µm should be used

PP: Polypropylene; PVDF: Polyvinylidenefluoride.