title: Subchondral insufficiency fracture of the femoral head: magnetic resonance imaging findings correlated with micro-computed tomography and histopathology.
abstract: We described magnetic resonance (MR) imaging findings of subchondral insufficiency fracture of the femoral head without collapse in which micro-computed tomography (CT) and histopathologic studies were performed. Magnetic resonance imaging showed a subchondral low-signal intensity band, which corresponded to the fracture callus. Diffuse bone marrow edema with contrast enhancement effect was seen in both the proximal and distal segments of the low-signal intensity band. These features are distinct from those of avascular necrosis.
authors.affiliation: Division of Radiological Science, Department of Radiology and Radiation Research, Nagasaki University Graduate School of Medical Sciences, Nagasaki, Japan. uetani@net.nagasaki-u.ac.jp
authors.forename: Masataka
authors.initials: M
authors.lastname: Uetani
authors.forename: Rashid
authors.initials: R
authors.lastname: Hashmi
authors.forename: Masako
authors.initials: M
authors.lastname: Ito
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Okimoto
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Kawahara
authors.forename: Kuniaki
authors.initials: K
authors.lastname: Hayashi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Enomoto
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shindo
mesh_terms: D000368:Aged; D005260:Female; D005264:Femoral Fractures / Q000175:diagnosis* / Q000473:pathology; D005270:Femur Head / Q000000981:diagnostic imaging* / Q000293:injuries*; D006801:Humans; D008279:Magnetic Resonance Imaging; D013223:Statistics as Topic; D014057:Tomography, X-Ray Computed