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  • Title: Biomechanical evaluation of two reconstruction techniques for posterolateral instability of the knee.
    Author: Rauh PB, Clancy WG, Jasper LE, Curl LA, Belkoff S, Moorman CT.
    Journal: J Bone Joint Surg Br; 2010 Oct; 92(10):1460-5. PubMed ID: 20884989.
    Abstract:
    We evaluated two reconstruction techniques for a simulated posterolateral corner injury on ten pairs of cadaver knees. Specimens were mounted at 30° and 90° of knee flexion to record external rotation and varus movement. Instability was created by transversely sectioning the lateral collateral ligament at its midpoint and the popliteus tendon was released at the lateral femoral condyle. The left knee was randomly assigned for reconstruction using either a combined or fibula-based treatment with the right knee receiving the other. After sectioning, laxity increased in all the specimens. Each technique restored external rotatory and varus stability at both flexion angles to levels similar to the intact condition. For the fibula-based reconstruction method, varus laxity at 30° of knee flexion did not differ from the intact state, but was significantly less than after the combined method. Both the fibula-based and combined posterolateral reconstruction techniques are equally effective in restoring stability following the simulated injury.
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