For the correction of uterine prolapse and cystocele, the operation of interposition is practically the universal procedure of choice. By this method, the bladder is elevated in the pelvis and is prevented from again descending by the uterine fundus. The principles of the operation as described by both Wertheim and Watkins are essentially these: 1. The bladder is supported by and rests on the posterior wall of the uterus. 2. The uterus is anteverted in the pelvis, being tipped forward about 180 degrees. By virtue of this torsion, the broad ligaments are twisted and perceptibly shortened. 3. The long axis of the uterus makes an acute angle with the vagina, thus preventing any descent of the cervix into or through that passage. The end-result of a properly performed interposition is illustrated in Figure 1. Although a successful procedure for prolapse, interposition of the uterus presents a decided hazard to future