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01.09.2009 | Knee | Ausgabe 9/2009 Open Access

Knee Surgery, Sports Traumatology, Arthroscopy 9/2009

Isometry of medial collateral ligament reconstruction

Knee Surgery, Sports Traumatology, Arthroscopy > Ausgabe 9/2009
Brian T. Feeley, Mark S. Muller, Answorth A. Allen, Carinne C. Granchi, Andrew D. Pearle


The purpose of this study was to determine the femoral and tibial fixation sites that would result in the most isometric MCL reconstruction technique. Seven cadaveric knees were used in this study. A navigation system was utilized to determine graft isometry continuously from 0º to 90º. Five points on the medial side of the femur and four on the tibia were tested. A graft positioned in the center of the MCL femoral attachment (FC) and attached in the center of the superficial MCL attachment on the tibia led to the best isometry (2.7 ± 1.1 mm). Movement of the origin superiorly only 4 mm (FS) led to graft excursion of greater than 10 mm (P < 0.01). MCL reconstruction performed with the origin of the MCL within the femoral footprint and the insertion in tibial footprint of the superficial MCL results in the least graft excursion when the knee is cycled between 0º and 90º. Although the MCL often heals without surgical intervention, surgical reconstruction is occasionally in Grade III MCL and combined ligamentous injuries to the knee. This study demonstrates the optimal position of the MCL reconstruction to reproduce the kinematics of the native knee.

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