Yahia L, Zukor D
Biomechanics-Biomaterials Group, Biomedical Engineering Institute, Ecole Polytechnique, Montréal, Québec, Canada.
Acta Orthop Belg. 1994;60(2):210-5.
In this study, the long-term effects of gamma irradiation were investigated on the indentation properties of rabbits' meniscal allotransplants. Three groups, i.e. fresh, frozen and frozen irradiated allotransplants, were studied at 6 months postoperatively. Contralateral menisci served as controls in each group. Treatment effects were assessed using three mechanical parameters, i.e. compliance to long-term creep (J(R)), compliance to rapid load (Jmu) and viscoelastic characteristic time (tau i). Comparison of the three groups showed that compliance to long-term creep of the frozen irradiated menisci was significantly reduced. This suggests that at 6 months postoperatively, the frozen irradiated allotransplants were less viscous compared to fresh or frozen transplants.
在本研究中，研究了γ射线辐照对兔半月板同种异体移植体压痕特性的长期影响。术后6个月对三组进行了研究，即新鲜、冷冻和冷冻辐照同种异体移植体。每组均以对侧半月板作为对照。使用三个力学参数评估治疗效果，即长期蠕变柔量（J(R)）、快速加载柔量（Jmu）和粘弹性特征时间（tau i）。三组比较表明，冷冻辐照半月板的长期蠕变柔量显著降低。这表明，术后6个月时，冷冻辐照同种异体移植体与新鲜或冷冻移植体相比粘性较小。
