Mølster A O
Acta Orthop Scand. 1984 Dec;55(6):632-6. doi: 10.3109/17453678408992411.
Three different degrees of rotational instability were induced in transversally osteotomized rat femora by means of intramedullary steel nails with various degrees of interlocking. Union was delayed in osteotomies with the greatest rotational instability. The strength, stiffness and energy absorption of the osteotomies at 4, 8 and 16 weeks were also lower in this group. At 25 weeks, the end-point of the experiment, there were no differences in incidence of union or in the mechanical properties between the experimental groups. We conclude that a high degree of rotational instability caused delayed fracture healing.
通过使用不同程度锁定的髓内钢钉，在横向截骨的大鼠股骨中诱导出三种不同程度的旋转不稳定。旋转不稳定程度最大的截骨术愈合延迟。该组在4周、8周和16周时截骨术的强度、刚度和能量吸收也较低。在实验终点25周时，各实验组之间的愈合发生率或力学性能没有差异。我们得出结论，高度的旋转不稳定导致骨折愈合延迟。
