“…In a subsequent trial, a porcine sling made from small bowel sub-mucosa was used. Here again, initially there were high continence rates; initial results after six months with 25 patients indicated a good continence rate of 87 %, dropping to 65 % after 72 months [8,9]. With the use of synthetic tape materi- Table 2 summarises the study results from this time onwards.…”