Uterine inversion is an unusual complication of the third stage of labor, rarely presenting at a subacute time. A 37-year-old woman had a subacute inversion on postpartum day 10. Examination revealed an incarcerated, partially necrotic, complete uterine inversion. The uterus could not be replaced vaginally during the administration of halogenated anesthetic agents. At laparotomy, a surgical incision of the posterior uterine wall and cervical ring was necessary to reposition the uterus for subsequent hysterectomy of the incarcerated uterus. Subacute uterine inversion, accompanied by a cervical constriction ring, most likely requires repositioning by an operative approach, using procedures not often utilized by the practicing obstetrician/gynecologist.