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  • Title: [Correlation between the findings of magnetic resonance imaging and prognosis of patients with predisposing factors of aseptic necrosis of the femoral head].
    Author: Takatori Y, Nakamura S, Nakamura T, Ninomiya S, Kokubo T, Sugimoto H.
    Journal: Nihon Seikeigeka Gakkai Zasshi; 1991 Aug; 65(8):447-53. PubMed ID: 1955791.
    Abstract:
    Eighteen patients with the predisposing factors for aseptic necrosis of the femoral head were followed up for more than two years after the initial magnetic resonance (MR) imaging. At the time of the initial examination, 24 femoral heads showed abnormal low-intensity areas on MR images without abnormal findings on plain radiographs. Among them, six femoral heads collapsed in the follow-up period. The initial mid-coronal T1-weighted MR images of these femoral heads had shown characteristic findings, that is, band-shaped low-intensity areas with the lateral end not covered by the acetabulum. Subchondral fracture of the femoral head occurred in the vicinity of the lateral end of the band. The findings of initial MR imaging seem to predict subsequent collapse of the femoral head.
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