More than a century ago, Cripps successfully employed the direct and
complete division of the anal sphincters as a means of approaching the
lower rectum and anal canal, and reported on a series of 36 patients who
had been treated in that fashion. Cripps was pleasantly surprised to
find good fecal continence in over two-thirds of the patients during
later follow-ups, despite the fact that the divided sphincters had not
been repaired. The transsphincteric procedure was largely forgotten in
subsequent years, however, and only the parasacral proctotomy of Kraske,
which spared the anal sphincters, can be said to have gained an
established place in the" surgical armamentarium. " It remained for York
Mason to redirect the attention of the surgical community to the great
potential of the trans- sphincteric approach and the excellent
continence that can be achieved through adequate repair of the divided
sphincters. Having recognized the outstanding practical value of this
procedure, we felt it necessary to define more precisely the anatomical
prerequisites that would ensure minimum operative bleeding, and to bring
the procedure more in line with current knowledge of normal continence
and defecation. Dr. A. Huber, in consultation with the director of the
Institute for Clinical Anatomy of our surgical department, Prof. A. von
Hochstetter, did many months of dissection work on fresh anatomic
preparations in an effort to explore and refine the various aspects of
the trans sphincteric ap- proach.