Biomechanical characteristics of tibio-femoral joint after partial medial meniscectomy in different flexion angles: a finite element analysis

Abstract Background Recent studies have pointed out that arthroscopy, the commonly-used surgical procedure for meniscal tears, may lead to an elevated risk of knee osteoarthritis (KOA). The biomechanical factors KOA can be clarified by analysis after arthroscopic partial meniscectomy (APM). This study aimed elucidate cartilage stress and meniscus displacement tibiofemoral joint under flexion rotation loads APM. Methods A detailed finite element model bone, cartilage, meniscus, major ligaments was established combining computed tomography magnetic resonance images. Vertical load front were applied simulate different buckling angles. At same time, simulating degrees internal external rotations, stresses on articular evaluated. Results Generally, contact both femoral tibial increased with degree. Moreover, maximum plateau gradually moved backward. position shift value lateral larger than medial meniscus. Conclusion Our provides a realistic three-dimensional evaluate influence range motion rotating distribution. decreased explain higher pressure components. These characteristics indicate potential degeneration.