Abdominal dressing with mechanism and means for fascial closure

A method for forming a compressive layer for a deep abdominal wound dressing, the method including:

• heating a foam layer, the foam layer having substantially isotropic material properties;
• applying a compressive force to the foam layer to increase a density of the foam layer in a direction of the compressive force to cause anisotropy in the foam layer by generating a first modulus of elasticity in a first direction corresponding to a direction of the applied force and a second modulus of elasticity in a second direction substantially perpendicular to the first direction;
• cutting the foam layer in a direction substantially perpendicular to the direction of the compressive force;
• rotating the pieces of the foam layer;
• securing adjacent pieces of the foam layer;
• and
• forming a compressive layer from the foam layer.