Femoral torsion assessment with MRI in children: Should we use the bony or cartilaginous contours?

Femoral anteversion: significance and measurement

“…Furthermore, MRI is usually expensive and not available in all research and clinical facilities. It has been suggested that MRI can be superior to CT in depicting the proximal and distal femoral contours in children with immature bones (Tomczak et al, 1997; Rosskopf et al, 2017). The orientation of scan slices is virtually equally achievable with CT and MRI (Koenig et al, 2012; Rosskopf et al, 2017; Beebe et al, 2017) although alignment of CT scans requires post‐scan reconstruction.…”

“…It has been suggested that MRI can be superior to CT in depicting the proximal and distal femoral contours in children with immature bones (Tomczak et al, 1997; Rosskopf et al, 2017). The orientation of scan slices is virtually equally achievable with CT and MRI (Koenig et al, 2012; Rosskopf et al, 2017; Beebe et al, 2017) although alignment of CT scans requires post‐scan reconstruction. In contrast, MRI scans can be directly aligned to anatomical features such as the femoral neck (Tomczak et al, 1995), thereby allowing the depiction of the whole region.…”