[A case of idiopathic aseptic osteonecrosis of the patellae: repeat study of Tc-99m HMDP bone scintigraphy in a reparative phase].
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.
Iwakubo
A
A
Department of Radiology, Sapporo Medical College.
Tsuda
T
T
Kubota
M
M
Iba
K
K
Wakabayashi
J
J
Morita
K
K
D000328:Adult; D005260:Female; D006801:Humans; D010020:Osteonecrosis / Q000000981:diagnostic imaging* / Q000473:pathology; D010329:Patella / Q000000981:diagnostic imaging* / Q000473:pathology; D011877:Radionuclide Imaging; D013669:Technetium Tc 99m Medronate / Q000031:analogs & derivatives
C024226:technetium Tc 99m hydroxymethylene diphosphonate; D013669:Technetium Tc 99m Medronate