Speeding Osteointegration

My wife who is 53 years old and in otherwise great shape, just had her 3rd total hip replacement in 8 months. The need for a hip replacement started with avascular necrosis of her femoral head and neck likely due to an earlier traumatic injury. The problem now is a total lack of osteointegration of the femoral stem and socket implants causing loosening and bone canal deformation. There is a slight bit of fibrous ingrowth but no bone cell ingrowth.

I know there are some smart people out there. Is there anyone reading this that may have at least an idea how we can stimulate new bone ingrowth in her femoral canal and pelvis? She is post-menopausal and does not take any supplements like Fosamax, Actonel, Boniva, or calcium. Thank you.