대퇴골두 무혈성 괴사의 조직학적 분석과 자기공명영상과의 관계

초록

We performed a retrospective study on 20 patients to correlate MRI findings with histopathologic results upon avascular necrosis of femoral head which were obtained after total hip arthroplasties. 17 femoral heads were male and 3 femoral heads were female. The average age of the patients at surgery was 50 years(ranging from 21 to 75 years old). The etiologies of AVN in the femoral head were alchol overuse in 17 and idiopathic in 3 femoral heads. The specimens were analysed histologically using Arlet and Durroux classification and 4 types of histological findings were drawn on the map of femoral head. Contiguous, 4.8 mm coronal 1.5 Tessler MRI (Magnetic 63 SP4000, Siemens, Germany) sections were compared with the corresponding histologic sections. Type 4 lesion was seen as a low intensity signal on both Tl and T2 weighted MRI images. Type 3 lesions showed as intermedite to low intensity signals in Tl and T2 weight MRI images. Type 1,2 lessions were not distinguishable on MRI findings. The MRI signal cannot predict particular histopathologic pattern in the later stages of avascular necrosis of femoral head.

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