Clin Orthop Relat Res 2021 May;479(5):1040-1049
L. M. Fowler, J. J. Nepple, C. Devries, J. C. Clohisy, Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA.
Background: Periacetabular osteotomy (PAO) increases acetabular coverage of the femoral head and medializes the hip's center, restoring normal joint biomechanics. Past studies have reported data regarding the degree of medialization achieved by PAO, but measurement of medialization has never been validated through a comparison of imaging modalities or measurement techniques. The ilioischial line appears to be altered by PAO and may be better visualized at the level of the inferior one-third of the femoral head, thus, an alternative method of measuring medialization that begins at the inferior one-third of the femoral head may be beneficial. Read More