I have used the leg bones of several animals for handles. Mostly shin bone from cows and Elk, but have some deer shins ready for use. After cleanup I let them dry in a light box for a while, maybe a few weeks to a couple months. Then soak them in a 1/2 mix of linsead and turpintine for a month. Let it dries for a few days and this works well and gives it a nice rich color. Almost ivory color.
Clean up after butchering is the hardest part. Make a wire cleaning device from a coat hanger and get most of the marrow out before soaking in borax and water for a fewdays to cut grease, fat and to prevent it from going rancid.
Be sure and show the finished knife. Lin