Abstract
Femoral antetorsion is usually measured radiographically. The axial projection method was developed at Showa University Fujigaoka Hospital in 1979 and performed as follows. The patient sits on a board that is inclined 10 degrees on the X-ray table with 90-degree hip flexion and 90-degree knee flexion. The X-ray beam is projected axially, from the knee to the femoral head, onto the X-ray film. The lower half of the film placed inside the orthoscreens is covered on both sides by black paper, which allows simultaneous views of the femoral head and condyle. The antetorsion angle is easily measured from a radiograph with method. This method was used on 62 patients (2 to 10 years of age) . Through clinical and fundamental studies, the author has concluded that this method is theoretically sound and clinically useful.
