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Journal of Biomaterials Applications
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The Use of Biomaterials in the Repair of Abdominal Wall Defects: A Comparative Study between Polypropylene Meshes (Marlex) and a New Polytetrafluoroethylene Prosthesis (Dual Mesh)

J. M. Bellón

Department of Morphological Sciences and Surgery, Surgical Research Laboratory, University of Alcald de Henares, 28871 Alcalc de Henares, Madrid, Spain

L. A. Contreras

Department of Morphological Sciences and Surgery, Surgical Research Laboratory, University of Alcald de Henares, 28871 Alcalc de Henares, Madrid, Spain

J. Buján

Department of Morphological Sciences and Surgery, Surgical Research Laboratory, University of Alcald de Henares, 28871 Alcalc de Henares, Madrid, Spain

A. Carrera-San Martin

Department of Morphological Sciences and Surgery, Surgical Research Laboratory, University of Alcald de Henares, 28871 Alcalc de Henares, Madrid, Spain

In this study we compared the behaviour of the non-porous on one side ePTFE Dual Mesh® prosthesis and the macroporous polypropylene mesh Marlex® in the repair of abdominal wall defects in rabbits. We evaluated the degree of integration with recipient tissue, biological tolerance, adhesion formation with viscera and the biomechanical resistance of the repair zone. Our results showed good biological tolerance of both prostheses and a high degree of adhesion formation in Marlex implants. In animals with Dual Mesh(r) implants, only loose adhesions were seen. Marlex implants induced the presence of disorganized scar tissue, while the Dual Mesh prostheses were encapsulated by organized tissue. The macrophage response was similar in both decreasing with time. The resistance to traction was higher when the reparation was done with polypropylene. We concluded that the structure of the prosthesis determines its degree of integration and the resistance to traction of the repaired zone.

Key Words: ePTFE • polypropylene • Marlex • Dual Mesh • abdominal wall defects • macrophages

Journal of Biomaterials Applications, Vol. 12, No. 2, 121-135 (1997)
DOI: 10.1177/088532829701200203
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