雷奈酸锶对大鼠骨质疏松性骨折愈合的骨密度及骨微结构影响

被引:7
作者
蒋梁华 [1 ,2 ]
李晓林 [2 ]
聂玮 [1 ,2 ]
机构
[1] 苏州大学
[2] 上海交通大学附属第六人民医院骨科
关键词
骨质疏松性骨折; 雷奈酸锶; 骨折愈合; 骨微结构;
D O I
暂无
中图分类号
R683 [骨折、骨的损伤];
学科分类号
100220 [骨科学];
摘要
目的观察雷奈酸锶对大鼠胫骨骨质疏松性骨折愈合过程中的骨密度、骨微结构及愈合后生物力学特性的影响。方法 72只雌性SD大鼠卵巢去势制造骨质疏松模型,造模成功后制造开放性骨折并予克氏针内固定。术后分为对照组和治疗组,分别给予生理盐水和雷奈酸锶625mg/(kg.d)灌胃给药。结果在治疗后6、8w时两组骨性愈合率并无明显差异,但Micro CT检验数据结果显示治疗组骨密度(BMD);骨小梁体积(BV)、组织体积(TV)、骨体积分数(BV/TV)、平均骨小梁厚度(Tb.Th)、平均骨小梁数目(Tb.N)均明显高于对照组(P<0.05),且治疗组最大压缩荷载在治疗后4w(48.1±5.6(治疗组)vs 21.8±4.8(对照组))、8w时亦明显高于对照组(96.5±9.7(治疗组)vs68.2±7.4(对照组))。结论雷奈酸锶能够抑制骨折后的骨量丢失,增加骨密度,促进骨折愈伤组织的生长,改善骨小梁三维结构及骨组织的力学性能,可用来促进骨质疏松性骨折的愈合并改善骨质量,预防再骨折。
引用
收藏
页码:868 / 872
页数:5
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