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  • Title: [A case of idiopathic aseptic osteonecrosis of the patellae: repeat study of Tc-99m HMDP bone scintigraphy in a reparative phase].
    Author: Iwakubo A, Tsuda T, Kubota M, Iba K, Wakabayashi J, Morita K.
    Journal: Kaku Igaku; 1991 Oct; 28(10):1167-71. PubMed ID: 1800777.
    Abstract:
    A 37-year-old woman entered our hospital because of bilateral knee pain. Tc-99m HMDP bone scintigram demonstrated increased activity in the bilateral patellae and cold lesion in the center and left lateral segments of the left patellae, so-called doughnut pattern. Trephine biopsy was performed to prove bilateral idiopathic asepct osteonecrosis of the patellae. The knee pain subsided and a bone scan 5 months later demonstrated increased activity in the bilateral patellae more widely than initial scan. We report the usefulness of Tc-99m HMDP bone scintigraphy to observe a reparative phase of idiopathic asepct osteonecrosis of the patellae.
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