title: Bilateral fracture of the sacrum associated with pregnancy: a case report.
abstract: We describe a 33-year-old woman with a bilateral fracture of the sacrum associated with pregnancy. Dual-energy X-ray absorptiometry of the lumbar spine and femoral neck showed normal bone mineral density, whereas bilateral osteopenic areas in the massae laterales were demonstrated by the initial CT-scan. The question remains whether the correct diagnosis is so-called insufficiency fracture due to transient osteoporosis of the sacrum associated with pregnancy or so-called fatigue fracture due to unaccustomed stress related to rapid and excessive weight gain in the last trimester of pregnancy.
authors.affiliation: Rheumatologische Abteilung, Medizinische Klinik, Kantonsspital Luzern, Switzerland.
authors.forename: L
authors.initials: L
authors.lastname: Schmid
authors.forename: C
authors.initials: C
authors.lastname: Pfirrmann
authors.forename: T
authors.initials: T
authors.lastname: Hess
authors.forename: U
authors.initials: U
authors.lastname: Schlumpf
mesh_terms: D015502:Absorptiometry, Photon; D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D015775:Fractures, Stress / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D011263:Pregnancy Trimester, Third; D011877:Radionuclide Imaging; D012447:Sacrum / Q000000981:diagnostic imaging / Q000293:injuries*; D014057:Tomography, X-Ray Computed; D015430:Weight Gain