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经皮插针内固定大鼠闭合骨折模型的设计与应用

Keywords: 大鼠,动物模型,经皮插针内固定,闭合骨折

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Abstract:

目的研究大鼠股骨闭合骨折内固定模型的设计与制作方法,探讨其应用价值。方法对50只SD大鼠采用经皮插针法于股骨内置入克氏针,使用自行制作的闭合骨折模型落体打击器造成股骨中段闭合骨折,术后通过X线及组织学检查了解骨折类型、移位程度及骨折愈合情况。结果单例造模操作时间平均约7min;术后X线证实横行或短斜行骨折38例,占模型总数的76%;X线示术后6周均达骨性愈合,组织学检查呈典型的骨折二期愈合过程。结论经皮插针内固定闭合骨折模型符合骨折病理生理演变、满足临床和动物闭合骨折内固定实验研究的需要,是简便易行的方法之一。

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