单词	avascular
释义	avascular /əˈvaskjʊlə / /eɪˈvaskjʊlə/ adjective Medicine Characterized by or associated with a lack of blood vessels: avascular necrosis the cornea is avascular... 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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