A system for creating a three-dimensional (3D) bone image of a bone is used with a 3D bone model of the bone that includes a plurality of bony landmarks. The system includes a 3D scanning device to scan the bone and generate a bone contour image, and an image processing device. The image processing device processes the 3D bone model to obtain a plurality of spatial locations respectively of the bony landmarks, and processes the bone contour image to identify a plurality of features that correspond respectively with the bony landmarks and to obtain a plurality of spatial locations respectively of the features. The image processing device performs image registration for the 3D bone model and the bone contour image, so as to create the 3D bone image by proportionally overlapping the 3D bone model and the bone contour image.