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Bone necrosis
Death of bone tissue due to traumatic or nontraumatic causes. [from NCI]
Osteonecrosis of the jaw
A rare osteonecrosis with characteristics of an exposed necrotic lesion in the mandible or maxilla present for more than eight weeks, arising as a complication of antiresorptive medication, dental intervention, trauma and infection. Patients may present with pain, altered neurosensory functions, secondary infections, and (in advanced stages) pathological fractures or fistulae. [from SNOMEDCT_US]
Avascular necrosis
A disease where there is cellular death (necrosis) of bone components due to interruption of the blood supply. [from HPO]
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