Expanded polytetrafluoroethylene patch for the repair of large abdominal wall defects.

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.