title: Enhanced magnetic resonance imaging of the first metatarsal after a bunionectomy.
abstract: Unenhanced magnetic resonance imaging diagnoses osteonecrosis on the basis of loss of fatty marrow and the presence of edema. Enhanced magnetic resonance imaging, however, directly assesses marrow perfusion and allows earlier prediction of osteonecrosis after a bunionectomy.
authors.affiliation: Madigan Army Medical Center, Tacoma, WA.
authors.forename: J B
authors.initials: JB
authors.lastname: Chen
authors.forename: R A
authors.initials: RA
authors.lastname: Youngberg
authors.forename: R O
authors.initials: RO
authors.lastname: Jones
mesh_terms: D006215:Hallux Valgus / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008682:Metatarsal Bones / Q000473:pathology