Janet,
I am so sorry that you and your spouse are going through this. Is the only met to the head of the femur? If so, did the doctor say a total hip replacement might be an option? I'm just wondering. In a total hip replacement, they remove the head and femoral neck and replace the ball/socket with titanium and plastic components. I have no idea if this has ever been done or if it makes sense. It might just be a question to ask his doctor.
I'll be thinking of you both and wishing for some good news soon.
With care,
Kerri