Abstract

Backgrounds: Characterization of mechanical behavior of meniscus is an important issue considering the significant role of meniscus in load bearing within the knee joint. Identification of mechanical change in meniscal tissue is of particular interest with respect to osteoarthritis (OA) research. Anterior Cruciate ligament (ACL) tear can also have deep effect on the meniscus health. Meniscus injury is common in patients who have ACL tear. The objective of this study was to investigate the effect of longitudinal meniscal tear on tenside orces inside knee ing presence or absence of ACL, using finiie element models. Methods: 3-dimensional finite element model of knee joint were developed using CT scan images. Healthy anatomical structures were designed using mimics software. The obtained model was imported to Abaqus software to simulate forces across the knee meniscus in association with ACL. Results: The maximum shear stresses were 1.73 MPa and 1.48 MPa on medial and lateral menisc, respectively, e.e. mor tension on medial than lateral tension meniscus In presence of stable ACL tear the sustained maximum shear stresson medial meniscus was 8.33MPa, and with instable cruciate ligament tears. The maximum shear stress on medial meniscus was 9.65Mpa. Conclusions: The result confirmed that biomechanical response of ACL tear plays an important role in the tension and stability of the meniscus. A meniscus tear associated with ACL tear increases the level of stress and stress distribution diagram.

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