Yu D, et al. - Sixty-two Crowe type II/III dysplastic hips that underwent total hip arthroplasty were retrospectively evaluated in order to examine the optimal femoral neck level for measuring femoral anteversion to prognosticate postoperative stem anteversion in developmental dysplasia of the hip and ascertain the predictive role of average anteversion on the basis of the sagittal 3-point fixation. From the lesser trochanter to head-neck junction, femoral anteversion reduced eventually from more to less than stem anteversion. Femoral anteversion at the 10-mm level above the lesser trochanter proximal base exhibited no important variation with stem anteversion, with a good association for the single-wedge and an outstanding relationship for the double-wedge stem for hips with femoral neck height ≥ 10 mm. With outstanding associations, no notable variation from stem anteversion was demonstrated by average anterior (lesser trochanter proximal base) and posterior cortex anteversions (femoral neck at 10 mm above the lesser trochanter proximal base). Hence, for Crowe type II/III hips with femoral neck height ≥ 10 mm, to prognosticate postoperative stem anteversion, the 10-mm level above the lesser trochanter proximal base is an right choice for calculating femoral anteversion. Moreover, a predictive role of the average of anterior cortex anteversion at the lesser trochanter and posterior cortex anteversion at the femoral neck was noted.