That two last ones - I assume those are the double jaw surgeries as the other ones were cheekbone reduction , mandible angle reduction and chin reduction - they look severe. See the yellow lines there, those are the nerves - the bone is cut completely , so the surgeon somehow has to preserve that nerve and saw around it, then figure out a way to keep the neve while removing some bone and pushing it together. I can imagine this surgery has quite a risk of nerve damage?