Endometrial osseous metaplasia is a rare clinical entity. It causes infertility and occurs in more than 80% of cases after an abortion. Various theories have been proposed and the most accepted theory is metaplasia of the stromal cells into osteoblastic cells that produce bone. This disease may be misdiagnosed. However once diagnosed, the complete removal of bone spicules by hysteroscopy allows, in most cases, fertility to be restored. We present the case of a 36-year-old patient nulliparous with a history of abortion for eight years who consulted May 5, 2008 to become pregnant. Detailed examination showed chronic endometritis with bone metaplasia as a possible cause of her infertility. Seven months after complete removal of bone fragments by hysteroscopy, the patient had a spontaneous pregnancy with normal development. She gave birth to a male infant weighing 3,000 g with an Apgar score of 9 at 1 and 5 min. Delivery and postpartum were normal.