[Therapy: perineal operation].

In most cases, the pelvic floor insufficiency is the result of combined traumas, degeneration and functional disorders of the rectum, pelvic floor and the anal canal with a great variety of terms and, therefore, unclear indication of special operative procedures. The internal or complete rectal prolapse may be removed by the Delorme's procedure, without causing damage to the pudendal nerves. The increase in defaecatory control is significant and the complication rate is tolerable. The best outcome will be achieved by suturing of the traumatic dissected sphincter muscles, without neurogenic injury during vaginal delivery in about 80 to 90 percent. Parks' post-anal repair, in addition to the other procedures, may increase the resistance to the egress of rectal contents.