Femoral Anteversion in the Hip: Comparison of Measurement by Computed Tomography, Magnetic Resonance Imaging, and Physical Examination
Arthroscopy, 05/01/2012Botser IB et al.
Although high correlation was found between anteversion angle measurements by CT and MRI, significant discrepancies in the absolute anteversion number between the 2 techniques suggest that they may not be interchangeable. Furthermore, CT was found to have higher interobserver reliability than MRI. There was a significant correlation between CT and examination of internal rotation of the hip. Clinically, the findings of the study show that the diagnosis of excessive femoral anteversion or retroversion should have different thresholds according to MRI and CT measurements; moreover, the diagnosis should not rely exclusively on either examination or radiologic criteria.
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