Right now I'm overseas with the US military and I ordered a folgertech i3 prusa to keep me preoccupied while I'm here. About 15 mins ago however I found out that one of my cats (Sid) got ran over by a threshing machine (farm equipment). He's going to be alright but he lost part of his leg in the process. I want to be able to scan in his leg stump and make a model of a prosthetic leg around it for him. Problem is though I don't know how to convert anything from a mesh to an actual file I can work around within autodesk inventor. I have used other programs as well but all of them aside from sketchup are all similar to inventor so they don't really work with mesh files very well.

Is there any good way of going about this?