Lateral location of the tibial tunnel increases lateral meniscal extrusion after anatomical single-bundle anterior cruciate ligament reconstruction

Oshima, Takeshi; Grasso, Samuel; Beach, Aaron; Fritsch, Brett; Parker, David

doi:10.1136/jisakos-2019-000303

Journal of ISAKOS

2019

DOI: 10.1136/jisakos-2019-000303

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Lateral location of the tibial tunnel increases lateral meniscal extrusion after anatomical single-bundle anterior cruciate ligament reconstruction

Takeshi Oshima

Samuel Grasso

Aaron Beach

et al.

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Cited by 2 publications

(2 citation statements)

References 31 publications

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confidence: 99%

“…7,10,22,23 In clinical cases, the lateral location of the tibial tunnel increased the rate of lateral meniscal extrusion after single-bundle ACLR. 14 Further, several authors have investigated the biomechanical effects of an AHLM tear and reported increased contact pressure between the femur and tibia, 15 decreased attachment area, and decreased ultimate failure strength. 10 In this study, we aimed to investigate the effect of a complete radial tear of the AHLM on force distribution in response to applied anterior and posterior drawer forces and internal and external rotation torques.…”

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Effect of Anterior Horn Tears of the Lateral Meniscus on Knee Stability

Shiwaku

Kamiya

Otsubo

et al. 2022

Orthopaedic Journal of Sports Medicine

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Background: Investigations on the biomechanical characteristics of the anterior horn of the lateral meniscus (AHLM) related to anterior cruciate ligament (ACL) tibial tunnel reaming have revealed increased contact pressure between the femur and tibia, decreased attachment area, and decreased ultimate failure strength. Purpose/Hypothesis: The purpose of this study was to investigate the influence of a complete radial tear of the AHLM on force distribution in response to applied anterior and posterior drawer forces and internal and external rotation torques. We hypothesized that the AHLM plays an important role in knee stability, primarily at lower knee flexion angles. Study Design: Controlled laboratory study. Methods: A total of 9 fresh-frozen cadaveric knee specimens and a robotic testing system were used. Anterior and posterior drawer forces up to 89 N and internal and external rotation torques up to 4 N·m were applied at 0°, 30°, 60°, and 90° of knee flexion. A complete AHLM tear was then made 10 mm from the lateral border of the tibial attachment of the ACL, and the same tests performed in the intact state were repeated. Next, the recorded intact knee motion was reproduced in the AHLM-torn knee, and the change in the resultant force after an AHLM tear was determined by calculating the difference between the 2 states. Results: In the torn AHLM, the reduction in the resultant force at 0° for external rotation torque (34.8 N) was larger than that at 60° (5.2 N; P < .01) and 90° (6.7 N; P < .01). Conclusion: The AHLM played a role in facilitating knee stability against an applied posterior drawer force of 89 N and external rotation torque of 4 N·m, especially at lower knee flexion angles. Clinical Relevance: This study provides information about the effects of AHLM injuries that may occur during single-bundle ACL reconstruction using a round tunnel.

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confidence: 99%

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confidence: 99%

Effect of Anterior Horn Tears of the Lateral Meniscus on Knee Stability

Shiwaku

Kamiya

Otsubo

et al. 2022

Orthopaedic Journal of Sports Medicine

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A balance between native footprint coverage and overlap of the anterolateral meniscal root in tibial tunnel positioning during anterior cruciate ligament reconstruction: A 3D MRI study

et al. 2023

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Lateral location of the tibial tunnel increases lateral meniscal extrusion after anatomical single-bundle anterior cruciate ligament reconstruction

Cited by 2 publications

References 31 publications

Effect of Anterior Horn Tears of the Lateral Meniscus on Knee Stability

Effect of Anterior Horn Tears of the Lateral Meniscus on Knee Stability

A balance between native footprint coverage and overlap of the anterolateral meniscal root in tibial tunnel positioning during anterior cruciate ligament reconstruction: A 3D MRI study

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