Abstract
Expanded polytetrafluoroethylene (ePTFE) was used to repair 11 large abdominal wall defects in ten patients. Three patches were fixed to the adjacent abdominal aponeurosis with a single row of sutures; seven patches were implanted with a 1-2 cm overlap of patch and aponeurosis and a double row of sutures. Recurrent buttonhole hernias were found in two patients, in both of whom a single row of sutures had been used. This reherniation was due to insufficient anchorage of the patch to the fascia. It is concluded that ePTFE is a useful material to repair large abdominal wall defects provided the patch is fixed to the aponeurosis with an overlap and a double row of sutures to prevent buttonhole hernias.
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