Schmidt J
Klinik und Poliklinik für Orthopädie, Universität zu Köln, Germany.
Arch Orthop Trauma Surg. 1993;112(2):79-81. doi: 10.1007/BF00420260.
The principle of prebending plates is recommended for intertrochanteric osteotomies to reach satisfactory primary stability. This can be done by conventional or functional prebending. Because of the shape of an overbent plate in conventional prebending, when the tension device is used a sliding of the medial wedge of the proximal fragment medially on the distal osteotomy plane takes place. In functional prebending, the final shape of the plate results in almost no movement of the bone fragments. Therefore the measurable interfragmentary compression of functional prebending is better than in the conventional procedure. The functional prebending also causes no loss of primary installed medialisation and there is no need for an additional procedure for the prebending during the operation.
对于转子间截骨术，推荐采用预弯钢板的原则以获得满意的初始稳定性。这可以通过传统预弯或功能预弯来实现。由于传统预弯中钢板过度弯曲的形状，当使用张力装置时，近端骨折块的内侧楔形部分会在远端截骨平面上向内滑动。在功能预弯中，钢板的最终形状几乎不会导致骨块移动。因此，功能预弯可测量的骨折块间压缩优于传统方法。功能预弯也不会导致初始植入的内移丢失，并且在手术过程中无需额外的预弯操作。
