Transobturator tapes (TOT) are placed according to the surgical technique described by Delorme et al. in patients with a previous cervico-sacropexy (CESA) or vagino-sacropexy (VASA). Before final Fixation of the tapes and suturing the vaginal skin a Hegar dilator sound with either 8 mm or 6 mm diameter is placed in the urethra and a second Hegar dilator sound with either 4 mm or 3 mm diameter is placed between the tape and the urethra. After suturing the vaginal skin the Hegar sounds are removed.