The Effect of Anterior Cruciate Ligament Injury on Tibiofemoral Joint Biomechanics: Under Draw Load


A 3-D finite element model, including cartilages, menisci and four main ligaments, was developed to investigate the effect of anterior cruciate ligament (ACL) injury on the biomechanics of knee joint. The menisci were assumed to be transversely isotropic and ligaments to be hyperelastic. The biomechanics of tibiofemoral joint were analyzed under 134 N posterior femoral force in three cases, corresponding to intact, 1/3 injured and 2/3 injured ACL. It was found that the highest Mises stress in menisci moved from lateral meniscus to medial meniscus with ACL damage aggravating, which corresponded to the clinical symptom that medial meniscus injury often occurs with chronic ACL injury and lateral meniscus injury often with acute ACL injury. It was also found that force of reaction in ACL did not change significantly with ACL damaging, meaning that the more load MCL supporting did not reduce the load damaged ACL enduring, i.e., the load applied on joint with ACL injury could induce the ACL damage aggravating more quickly.

  • Abstract
  • Keywords
  • Introduction
  • Nomenclature
  • Material and Methods
  • Results
  • Discussions
  • Acknowledgments
  • References

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