珍珠层粉在新西兰兔股骨髁内的成骨试验

目的 探讨植人新两兰兔股骨髁内的珍珠层粉的成骨能力及成骨方式.方法 将珍珠层加工成粉,植入新西兰兔股骨髁内,术后4、8和12周进行影像学检查及X线阻射度测定;相应时间点取材,进行硬组织切片处理及组织学观察:应用Image-Pro图形软件分析术后8、12周丽春红染色硬组织切片的成骨面积;对X线阻射度做统计学重复测量的方差分析,成骨面积作析因设计的方差分析.结果 在不同的时间点,X线片密度有轻度变化,未见到明确的新牛骨影像:X线的阻射度测定显示在不同时间点阻射度值逐渐降低,变化有统计学意义;硬组织切片可见到类骨质、编织骨和板层骨随时间变化生成量逐渐增加;图形分析显示出珍珠层粉明显的成骨面积,与空白对照组比较统计学差异显著.结论 珍珠层粉植入新西兰兔股骨髁内有明显的成骨作用,在体内的生物降解缓慢.可能以骨诱导的方式成骨.

Nacre-induced osteogenesis in the femoral condyles of New Zealand rabbits

Objective To evaluate nacre powder-induced osteogensis in the femoral condyles of New Zealand rabbits and investigate the possible mechanism. Methods Nacre powder was implanted into the femoral condyles of New Zealand rabbits and 4, 8, and 12 weeks after the implantation, radiographic examinations were carried out and the bone density was evaluated. The bone tissue specimens were sliced after fixation for histological observations. The osteogenesis area on the slice was estimated with Ponceau Red staining 8...