title: [Spontaneous fracture of the sacrum due to "insufficiency". An overlooked cause of low lumbago in elderly women].
abstract: A case of insufficiency fracture of the sacrum is reported. These fractures usually occur in elderly women and are secondary to various conditions, mainly postmenopausal or steroid-induced osteoporosis and radiation therapy. They are often overlooked or confused clinically and radiographically with metastatic disease. Findings on plain films are often subtle. Radionuclide bone scan shows a characteristic H or butterfly shaped pattern of increased uptake in the sacral alae. The diagnosis is confirmed by conventional tomograms or CT which show the fracture always surrounded by prominent sclerosis.
mesh_terms: D000368:Aged; D001416:Back Pain / Q000209:etiology*; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary; D003937:Diagnosis, Differential; D005260:Female; D005598:Fractures, Spontaneous / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D010024:Osteoporosis / Q000150:complications*; D011859:Radiography; D012447:Sacrum / Q000000981:diagnostic imaging / Q000293:injuries*
vernacular_title: Fracture spontanée du sacrum par "insuffisance". Une cause méconnue de lombalgie basse chez la femme âgée.