The posterior IVS delivered satisfactory results for vault and posterior compartment prolapse, with a 75% improvement in vault prolapse. It was not possible, however, to separate the effect of posterior IVS and posterior colporrhaphy on the prevention of recurrent prolapse nor on the improvement of difficulty in defecation. Due to the utilization of the now-abandoned vaginal anterior colposuspension procedure for the treatment of anterior compartment prolapse, no conclusions regarding the impact of the posterior IVS on the anterior compartment can be made.