Segmental torsion assessment is a reliable method for in-depth analysis of femoral alignment in Computer Tomography

摘要

Purpose De-rotational osteotomies are indicated in patients with pathologic femoral torsion. However, there is disagreement whether an osteotomy should be performed proximally or distally. Conventionally only the total torsion is measured, which does not allow differentiation between a torsional deformity located in the proximal or distal metaphysis or the diaphysis. The aim of this study is to validate a new multilevel measurement protocol for evaluation of the magnitude of torsion of the respective femoral segments in CT.