Volumetric measurement of osteonecrotic femoral head using magnetical resonance imaging

摘要

Background: Several studies have documented that the size of the osteonecrotic lesion in the femoral head is an essential parameter in determining prognosis and treatment. Methods: Our study tested the accuracy of osteonecrotic lesions measured by a computed magnetic resonance imaging in patients 15 with osteonecrosis of the femoral head (ONFH). The values were compared with direct anatomical measurements of the femoral head after total hip replacement. Results: Volumetric measurement appeared to be very reliable. The mean absolute deviation between MRI and anatomical measurements was similar to that of two MRI sets. Conclusions: Quantitative volumetric measurements appear to be the most reliable method to measure the true size of a three-dimensional osteonecrotic lesion of the femoral head. Determination of lesion size must be part of a comprehensive system of staging of this disease. © 2009 Vasile Goldis University Press.