Carmona M, et al. - The experts assessed the range of “normal anatomical values of the proximal femur” and their association with age, gender, and ethnicity in a cohort of 628 healthy individuals (394 males/234 females), using a 3-dimensional computed tomography automated software. Overall, the mean neck-shaft angle (NSA), the mean femoral neck version, mean femoral offset (FO) and mean femoral canal flare index (fCFI) was 124.7°, 14.5°,42.9 mm and 3.4. respectively. Gender disposition was correlated with all parameters, with the females manifesting more valgus and anteverted hips. A lower NSA and fCFI and a greater FO for older individuals was observed. Also, ethnicity and body mass index were not connected to any parameters. Therefore, in a large cohort of healthy people and in the examined proximal femur anatomical parameters, a direct relationship of age and gender to the variations was ascertained. Further, in order to reproduce preoperative anatomy of male and patients older than 50 years, these major gender-based and age-based differences could promote more varus and lateralized components.