1. Method for optimally visualizing a morphologic region of interest of a bone in an X-ray image of a patient, comprising: receiving a set of 3D medical images of the patient's bone, creating a 3D bone model of at least part of the bone comprising said region of interest from said set of 3D images, determining a criterion representative of a visualization of an extent of said morphologic region of interest, automatically determining from the 3D bone model optimal relative bone and X-ray orientation so as to optimize said criterion for said patient, and creating at least one virtual X-ray image of the bone from said set of 3D images according to said optimal relative bone and virtual X-ray orientation; wherein the bone forms part of a joint and the set of 3D medical images comprises 3D images of the joint, and wherein the method further comprises: creating the 3D bone model of at least part of each bone of the joint including the morphologic region of interest from said set of 3D images, assigning to the bone joint a kinematic joint model, and automatically determining from the 3D bone model optimal relative bone and X-ray orientation in accordance with the kinematic joint model so as to optimize said criterion; wherein the bone is a femur and the criterion is an alpha angle defined as an angle between a hemi-line from a femoral sphere center in a direction of a femoral neck axis and a radius from the femoral sphere center and a point of a circumference of a femoral head-neck junction, and wherein optimizing the criterion comprises determining a maximum alpha angle.