A method for obtaining a 3-dimensional image using at least one conventional 2-dimensional x-ray image, said method comprising: acquiring at least an x-ray image of a bone of interest determining camera model to at least determine spatial values of source and at least one spatial value of bone extracting a contour and distinct anatomical regions identifying anatomical values in terms of 2- dimensional anatomical values importing a pre-created 3-dimensional template extracting silhouette vertices of said pre-created 3- dimensional template and their projections aligning said pre-created 3-dimensional template wrt said input x-ray image projecting said pre-created 3-dimensional template onto said acquired image plane to obtain a 2-dimensional projection model modifying said aligned template to match said identified 2-dimensional values determining a best matching point on said extracted contour back- projecting each of said best matching determining a target position and deforming said pre-created 3-dimensional template in order to obtain a 3-dimensional reconstructed image.
