Is merging 3D images of part of a patient's bone with medical screws and converting them into a three-dimensional plastic model for use in precise medical purposes Haram (religiously forbidden), and does it involve any suspicion of imaginative magic?

There is no harm in making a model of a skeleton, because it is not considered a complete image of living beings, and photographing bones is not prohibited. It is permissible to make an image of a human skeleton. This is not part of the magic of illusion, which relies on deception, misrepresentation, and strange acts aimed at taking people's money unjustly.