The best way to help a non-healing fracture to heal is to make sure that you are doing everything possilbe to keep yourself healthy. Eat well, rest, exercise (under physical
therapy guidance), and take care of yourself. Sometimes, certain diseases, like osteoporosis, make it difficult for bones to heal well. Be sure that you are taking in enough calcium (1500mg daily for post-menopausal women) and vitamin D (800IU daily) so that bones have enough of the building blocks the need to rebuild.
If these suggestions still do not help, your health care provider should investigate why you are not healing well. Medicines, such as those used to build bones for osteoporosis, can sometimes be used if appropriate. More tests may be needed to see where your problem lies so that interventions to help you heal can be tried.