The feasibility of ambulatory uterine surgery is not just dependent on recent technological advances in instrumentation such as miniaturization of equipment, but also the favorable anatomical characteristics of the uterus itself. The sensitive innervations of the uterus originate in the myometrium and extend to the outer serosal surface, whereas the endometrium and any fibrotic tissue within the cavity are less sensitive. Thus, procedures can be carried out without the use of analgesia or anesthesia.