["Loop"-drainage in the management of recurrent extra-sphincteric perianal fistulae]

This work covers the loop seton drainage tube treatment of multiply recurring high-spreading extrasphincteric perianal fistulas in 14 patients. The drainage loop setons make possible the rinsing of the wound after fistulectomy and bi-directional drainage of the wound discharge. Strangulation of the wound, and hence the development of recurrence, is prevented by means of controlled formation of scar tissue. The sphincteral musculature of the anus is protected from damage. 25 fistulas which recurred in the 14 patients were treated successfully by this method. None of the patients developed incontinence. 1 fistula recurred. With regard to the pull-out method, in the case of high-spreading multiply recurring extrasphincteric or suprasphincteric perianal fistulas.