【作者】 卢向东；

【导师】 刘强；

【作者基本信息】 山西医科大学 ， 骨科， 2002， 硕士

【摘要】 目的 探讨珊瑚羟基磷灰石(CHA)结合碱性成纤维细胞生长因子(bFGF)修复骨缺损的效果，为其临床、科研应用提供实验依据。方法 以CHA作为bFGF的可吸附性载体，制备成复合人工骨，将其植入兔尺骨中段10mm骨缺损处，以单纯CHA组，自体骨移植组和空白组作为对照，在术后2、4、8、12周，进行大体解剖、X线摄片、病理组织切片、生物力学测试等方法观察，研究各组骨愈合，血管化情况及力学强度。结果 在2、4、8周CHA／bFGF组血管化程度优于自体骨移植、单纯CHA及空白对照组。病理组织切片及X线摄片显示骨缺损修复程度CHA／bFGF组明显优于自体移植骨组优于单纯CHA组，而空白组骨缺损处被纤维组织及肌组织等填充。生物力学测试显示术后12周CHA／bFGF组抗扭转强度明显优山祖『压料大学祠厦士学位论文于自体骨移植组。结论CHA与bFGF结合有明显促进骨缺损修复的作用，强于自体骨移植及单纯CHA移植。成骨方式包括骨传导、骨诱导，二者协同，可用于骨缺损修复。更多还原

【Abstract】 OBJECTIVE To investigate the efficacy of combined use of basic fibroblast growth factor(bFGF)--coralline hydroxyapatite(CHA) in repairing segmental bony defects. METHODS CHA/bFGF composite was prepared and had been implanted in the comm continuous defects in ulna of adult rabbits , while CHA, autograft implantation or no graft were used as the controls . The animals were sacrificed 2,4,8and 12 weeks after operation , the bone repair process was investigated using physically , roentgenogram, histological observation and biology mechanics detection. RESULTS The vascularization in CHA/bFGF transplanted applied areas was better than that in CHA, autograft implantation or the control group 2,4 and 8 weeks after operation . Histological and roentgenogram examination showed that CHA/bFGF composite was implanted were repaired more rapidly than those with CHA or autograft implantation and in thecontrol group was filled with fibrous and muscular tissues. Biologic mechanics showed that on the CHA/bFGF side the callus was growing more quickly and vigorously , the bone density was higher and the antibending force was stronger than autograft implantation after 12 weeks. CONCLUSION CHA/bFGF can efficiently repair bony defect, and the capability of CHA/bFGF is the best of all by the way of satisfactory osteoconduction , osteoinduction . CHA/bFGF composite may be feasible for diaphyseal defect restoration , and the combination of CHA and bFGF is synergic in inducing bone formation .更多还原