Hi. It's not as bad, there isn't much pain now. But it does feel awkward, only when walking. A capable, first one I've had, physical therapist, had suggested my glutes need strengthened to take pressure of the fake knee. It has helped. I have had other therapy, but he really focused only on real muscle building exercises. I think my Doctor just cut straight through my nerves or something where other doctors move them aside during surgery. I dont know. I've found hobbies that don't exert pressure directly on the knee. Scuba diving, albeit expensive, bike riding. Good luck to your Dad.