 Almost a third of jawbone patients will need surgery in one or more other parts of the jaws because the disease so frequently present multiple lesions, i.e., multiple sites in the same or similar bones, with normal marrow in between.In the hip, at least half of all patients will get the disease in the opposite hip over time; this pattern occurs in the jaws as well.Recently, it has been found that some osteonecrosis patients respond to anticoagulation therapies alone.