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  • Title: Biomechanical comparison of fixation of type-I fractures of the lateral tibial plateau. Is the antiglide screw effective?
    Author: Parker PJ, Tepper KB, Brumback RJ, Novak VP, Belkoff SM.
    Journal: J Bone Joint Surg Br; 1999 May; 81(3):478-80. PubMed ID: 10872370.
    Abstract:
    Type-I fractures of the lateral tibial plateau were simulated by osteotomy in 18 pairs of unembalmed cadaver tibiae. One fracture of each pair was fixed with two lag screws whereas the contralateral site was stabilised with three lag screws, or two lag screws plus an antiglide screw. The lateral plateau was displaced downwards using a servohydraulic materials testing machine and the resulting force and articular surface gap were recorded. Yield load was defined as the maximum load needed to create a 2.0 mm articular offset at the fracture line. The yield loads of the three-lag-screw (307 +/- 240 N) and antiglide constructs (342 +/- 249 N) were not significantly different from their two-screw control constructs (231 +/- 227 and 289 +/- 245 N, respectively). We concluded that adding an antiglide screw or a third lag screw did not provide any biomechanical advantage in stabilising these fractures.
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