Gotzen L, Hütter J
Arch Orthop Unfallchir. 1976 Jul 23;85(2):129-38. doi: 10.1007/BF00415450.
The rigid fixation of bone fragments by compression osteosynthesis with plate produces a high degree of resistance against bending forces, and over the surface friction against rotatory movements. In this way, a uniform distribution of pressure extending over the whole bone section is effected. But by virtue of the asymmetric positioning of the plate on bone-shaft, a torque effect is caused when strain is applied bringing about a distraction of the cortex on the side opposite the plate. Human femoral and tibial specimens would be osteomatized and then stabilized with AO plate adapted to conform to the surface of the bones, under a tension of 70 and 140 kp. With narrow plates having a inferior rigidity there is a greater distraction than is the cause with the wide plates. To compensate against the torque effect, the plates would be prebent. Two measuring methods would be investigate by which the correlation between prestraining and prebending could be determined. To achieve a constant distribution of pressure the narrow plates would have to be prebent to a greater degree than the wide ones, and the DC plates more than the standard plates.
通过钢板加压接骨术对骨碎片进行坚固固定，可产生高度的抗弯力，并在表面形成抵抗旋转运动的摩擦力。这样，就能在整个骨截面实现压力的均匀分布。但是，由于钢板在骨干上的不对称定位，施加应变时会产生扭矩效应，导致钢板对侧的皮质骨出现牵张。将人体股骨和胫骨标本进行骨化处理，然后在70和140千帕的张力下，用适配于骨表面的AO钢板进行固定。与宽钢板相比，刚性较差的窄钢板会产生更大的牵张。为了抵消扭矩效应，需对钢板进行预弯。将研究两种测量方法，通过它们可确定预应变与预弯之间的相关性。为了实现压力的恒定分布，窄钢板比宽钢板需要更大程度的预弯，动力加压钢板比标准钢板需要更大程度的预弯。
