Axial Oblique CT to Assess Femoral Anteversion

AJR:194, May 2010

Axial Oblique CT to Assess Femoral Anteversion

Delma Y. Jarrett, Amy M. Oliveira, Kelly H.Zou, Brian D. Snyder, Paul K. Kleinman

OBJECTIVE. The objective of our study was to compare anteversion measurements of a human cadaveric femur obtained using axial CT slices with axial oblique reformations along the femoral neck and assess how accuracy changes across a range of simulated femur positions.

CONCLUSION. Axial oblique reformations allow more accurate anteversion assess­ment than axial images with femoral flexion, extension, and internal and external rotation. Centers shoula consider replacing the standard straight axial technique with the axial oblique method for CT determination of femoral anteversion.