The author studies the result of cervical cerclage carried out by him on seven multi-pregnant women (between 10-28 weeks gestation, of whom five had not borne any children) and on one woman who is pregnant for the first time (twins, at 12 weeks gestation) because of threatened abortion which usually would occur in the second trimester of the pregnancy, due to shortening and premature opening of the cervical os which leads to the protrusion of the membranes with interruption of the pregnancy. The author describes his patients' symptoms and signs, the week of pregnancy at which the operation was performed, vaginally, the urgent conditions which prompted the operation, the frequency of abortion and the condition of the child at the end of the pregnancy.