Thank you for answering my last post. I was also wondering how long or how many it treatments does it typically take to help a bone that is necrotic recover.
It would be hard to offer much without actually seeing the patient myself. Generally these types of injuries take a long time to completely heal. It is generally somewhere between 4-8 weeks before some substantial healing has begun and complete healing can take 3-6 months or longer depending on the nature of the injury, the overall health of the patient, and the frequency of treatment.
The length of healing is generally tied to how much circulation the area gets (i.e. what bones/tendons are effected), how clean the fracture was, and the overall health and circulation of the patient. Generally the more you can keep circulation through the area and keep it warm (warmth fosters circulation) the quicker it will heal. Whatever you and your patient does to foster this will help considerably.