双膦酸盐与非典型股骨骨折相关

2017-08-04 MedSci MedSci原创

双膦酸盐是治疗骨质疏松症最广泛的药物治疗方法,可减少绝经后妇女的骨折风险高达50%。然而,在过去的十年里,这些药物已与非典型股骨骨折相关(AFFS),有横向的罕见的骨折,脆性形貌。不寻常的断口形貌表明,双膦酸盐治疗可能影响增韧机制的皮质骨。本研究的目的是比较的成分从双膦酸盐治疗的患者AFFS那些从患者典型的骨质疏松性骨折和双膦酸盐治疗骨组织及力学性能。骨折修复术的绝经后妇女获得了股骨近端骨皮质邻近

双膦酸盐是治疗骨质疏松症最广泛的药物治疗方法,可减少绝经后妇女的骨折风险高达50%。然而,在过去的十年里,这些药物已与非典型股骨骨折相关(AFFS),有横向的罕见的骨折,脆性形貌。不寻常的断口形貌表明,双膦酸盐治疗可能影响增韧机制的皮质骨。


本研究的目的是比较的成分从双膦酸盐治疗的患者AFFS那些从患者典型的骨质疏松性骨折和双膦酸盐治疗骨组织及力学性能。骨折修复术的绝经后妇女获得了股骨近端骨皮质邻近骨折部位活检(骨折组,n = 33)或全髋关节

置换术(对照组,n = 17)。患者随机分为五组,根据骨折的形态和历史的双膦酸盐治疗[ +双非典型:n = 12,双时间:8.2(3)Y;+双典型:n = 10,7.7(5)Y;+双nonfx:n = 5,6.4(3.5)Y;−双典型:N = 11;−双nonfx:n = 12 ]。振动光谱和纳米压痕表明,双膦酸盐治疗的妇女与非典型骨折组织比双膦酸盐治疗的女性典型骨质疏松性骨折更矿化。此外,断裂力学的测量表明,使用双膦酸盐治疗的患者组织的断裂韧性较低的缺陷,裂纹萌生韧性和裂纹偏转在osteonal边界比Naï双膦酸盐的患者。

总之,这些结果表明,赤字的内在和外在的增韧机理,有助于长期双膦酸盐类药物治疗的患者的AFFS。

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