In order to prevent complications associated with incompetent sutures of the anastomosis in performing frontal resection of the rectum the invaginational immersion of the one-row catgut interintestinal anastomosisis was performed into the lumen of the inferioampullar portion of the rectum to a depth of 15-20 mm by means of traction by a plastic ring which was fixed when applying the anastomosis on the side of its lumen to the suture knots. The method was used in 12 patients without complications due to incompetence of the anastomosis sutures.
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