Currently the evacuation proctogram is the gold standard for diagnosis of posterior compartment disorders. This technique, however, exposes the patient to ionising radiation, requires preparation of the small and large bowel with contrast and defaecation in a non-private setting, which most women find embarrassing and unpleasant. Over the years, research has focussed on identifying alternatives that are better tolerated to substitute evacuation proctography. Ultrasound is a widely available, non-expensive, non-invasive, fast and a well-tolerated method for the dynamic and static imaging of the pelvic floor without the use of ionising radiation. The level of agreement between transperineal ultrasound (TPUS) and proctography for varies widely. Endovaginal ultrasound (EVUS) not yet compared to proctography. The aim of this study is to assess the level of agreement between ultrasound (EVUS and TPUS) and evacuation proctography in the diagnosis of posterior compartment disorders.