Characterized by or associated with a lack of blood vessels.
- She had undergone a right hip replacement because of avascular necrosis of the femoral head associated with use of corticosteroids.
- Defects of the hip's cartilage can be caused by osteoarthritis, rheumatoid arthritis, avascular necrosis, and trauma.
- The areas with aggregates of cavernous-type blood vessels alternated with avascular zones.
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