（I） 坏死性损伤 （ necrotic lesion ）有两种主要形式：①小管破裂性损伤（tubularrhexirlesion）表现为肾小管上皮细胞坏死、脱落，基底膜受损，病变累及肾小管各段，...
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There are numerous therapeutic methods to treat femoral head osteonecrosis, but there is no consensus on the best method to evaluate the size, location and boundaries of a necrotic lesion.
目前尚没有统一的确定股骨头坏死病灶的大小和部位的方法，导致对股骨头坏死的治疗方案存在争议。
As one of important parts in human hip joint, the femoral head has high probability to get lesion or even to become necrotic. This is still one of the knotty problems in medical field at present.
作为人体髋关节的重要组成部分，股骨头发生病变甚至坏死的机率很高，目前这仍然是医学领域尚未解决的疑难问题之一。
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