Multiple Regression from Pelvic and Femoral Anatomical Landmarks for Proximal Femur Morphology Prediction

INTRODUCTION Several clinical applications rely on the accurate estimation and description of the proximal aspect of the femur in order to obtain satisfactory results. The femoral neck axis is usually defined as a straight line connected between the femoral head center and the mean point of middle part of the neck. These two anatomical landmarks (ALs) are not directly accessible by palpation. The femoral neck axis must therefore be estimated indirectly using other ALs or external device (such as fluoroscopy). Such estimation has been previously performed using multiple regression [1] from palpable ALs [2] and the availability of a database including the required information, i.e., femoral head center and neck orientation locations [3]. Accuracy level for the hip joint and femoral neck was too low for surgery application and further development was requested.