CORR:亚裔长期服用双磷酸盐非典型性股骨骨折几率高

2014-04-12 小小老虎 丁香园

  双磷酸盐可降低骨质疏松性患者骨折的发生率,是临床上治疗骨质疏松症的最常用治疗药物。但是患者长期服用双磷酸盐后有发生非典型股骨骨折的风险。双磷酸盐性非典型股骨骨折和骨质疏松性骨折在 骨折原因、骨折机制以及影像学表现上具有显著不同。双磷酸盐性非典型股骨骨折多发生在股骨转子下或股骨干部位,患者在无外力作用或轻微外力作用下即可发生 骨折,具有典型性影像学表现:股骨干横行或短斜型骨折,伴有局部

  双磷酸盐可降低骨质疏松性患者骨折的发生率,是临床上治疗骨质疏松症的最常用治疗药物。但是患者长期服用双磷酸盐后有发生非典型股骨骨折的风险。双磷酸盐性非典型股骨骨折和骨质疏松性骨折在 骨折原因、骨折机制以及影像学表现上具有显著不同。双磷酸盐性非典型股骨骨折多发生在股骨转子下或股骨干部位,患者在无外力作用或轻微外力作用下即可发生 骨折,具有典型性影像学表现:股骨干横行或短斜型骨折,伴有局部骨膜反应和皮质增厚。这种非典型股骨骨折在双磷酸盐用于临床前非常少见。

  既往研究表明种族和性别和骨质疏松性骨折的发生具有密切联系,因此治疗骨质疏松性骨折需要考虑患者的种族、民族和性别。在双磷酸盐用于临床治疗骨质疏 松症以后,有学者发现亚裔人群存在较高的非典型性股骨骨折的发生率。但是既往研究未考虑到诸如骨质疏松性骨折、无症状性骨折等混杂因素。

  因此,美国纽约大学的Alejandro Marcano教授进行了一项研究,以了解种族和性别是否和非典型性股骨骨折存在联系,其研究结果发表在2014年Clinical Orthopaedics and Related Research杂志上。其研究目的主要为1.确认长期服用双磷酸盐人群中发生非典型骨折患者和未发生骨折患者之间是否存在人口学特征差异(如年龄、性 别、种族)。2.确认长期服用双磷酸盐发生非典型骨折患者与未服用双磷酸盐骨质疏松性股骨近端骨折患者之间是否存在人口学特征差异。

  第一组患者为2004年至2011年之间长期服用双磷酸盐超过3年发生完全性或不完全性非典型性股骨骨折的患者(BFF),共有54例患者进入研究。 第二组患者为2009年至2012年之间长期服用双磷酸盐超过3年但未发生相关骨折的患者(BNF),共有119例患者。第三组患者为2011年至 2012年之间未服用双磷酸盐的骨质疏松性股骨近端骨折患者(PFF),共216例。记录患者的年龄、性别和种族/民族情况并进行比较。使用多变量分析和 单变量分析比较数据,并按年龄性别进行分层分析。

  通过统计分析,作者发现:BFF组和BNF组患者的年龄和性别分布相似,BFF组亚裔人群比例(17%)要高于BNF组(3%),在BNF组亚裔人群 的比例也要高于西班牙裔。BFF组人群不仅年龄要小于PFF组(67.5岁VS78.4岁),而且男性更少(7%VS14%)。

  因此,作者认为亚裔人群长期服用双磷酸盐发生非典型性股骨骨折的风险较高,因此对长期服用双磷酸盐的亚裔人群需密切关注以避免发生非典型股骨骨折。

原始出处:

Marcano A, Taormina D, Egol KA, Peck V, Tejwani NC.Are race and sex associated with the occurrence of atypical femoral fractures?Clin Orthop Relat Res. 2014 Mar;472(3):1020-7

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    2014-04-14 psybestwish

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