Abstract
Eight knees of four female cases, with aseptic necrosis in bilateral femoral condyles were reported. Three cases were received steroid therapy for previous diseases. We classfied Magnetic Resonance images (MR images) by the necrosis size and pattern. We compared MR image with the roentgenograms and the clinical symptoms.
Necrosis size in four knees was classified as localized type, and the other four as broad type. And we classified MR images into three patterns.
Five knees were typical band pattern, and two were homogeneous pattern, and the another was inhomogeneous pattern.
No collapse was recognized in cases of the localized type and band pattern type in our cases.
