The primary etiology of avascular necrosis of the femoral head (AVN) appears to be circulating microemboli that block the microcirculation of the femoral head.
主要病因
骨
缺血性坏死骨（结）似乎是微循
，阻止微循
骨。
The primary etiology of avascular necrosis of the femoral head (AVN) appears to be circulating microemboli that block the microcirculation of the femoral head.
主要病因骨缺血性坏死骨（结）似乎是微循，阻止微循骨。
声
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