Nunamaker D M, Perren S M
Clin Orthop Relat Res. 1979 Jan-Feb(138):167-74.
The use of an exactly contoured compression plate to the surface of a bone will lead to asymmetrical loading of that fracture line with possible gapping of bone opposite the plate. The stability of fixation can be increased through the use of compression combined with prebending. The present study in 19 sheep demonstrates the biological effects of 3 modes of plating fixation: (1) no compression; (2) compression; and (3) compression after prebending using 2 types of compression plates with different stiffness evaluated radiographically and histologically. Compression together with prebending, especially when using plates of adequate stiffness, can prevent bone resorption at the fragment surfaces even under immediate weight-bearing conditions in the sheep tibia. Prevention of interfragmentary bone resorption lowers the risk of non-union and/or implant failure secondary to motion at the fracture site.
将精确塑形的加压钢板应用于骨表面会导致骨折线处的载荷不对称，钢板对侧的骨可能出现间隙。通过加压结合预弯可提高固定的稳定性。本研究对19只绵羊进行，采用两种不同刚度的加压钢板，通过影像学和组织学评估了三种钢板固定方式的生物学效应：（1）无加压；（2）加压；（3）预弯后加压。加压结合预弯，特别是使用刚度合适的钢板时，即使在绵羊胫骨立即负重的情况下，也可防止骨折碎片表面的骨吸收。防止骨折碎片间的骨吸收可降低因骨折部位活动继发骨不连和/或植入物失效的风险。
