Development of an individualized biomechanical knee model for calculation of the tibiofemoral force during isokinetic knee extension

Meniscus injuries are increasingly being treated using arthroscopic surgical techniques, and isokinetic measurement is commonly used to assess return of knee joint function. Accurate estimation of tissue loading in the knee joint requires the use of models tailored to the gender of the patient, as anatomical differences between men and women have previously been shown to affect the results of similar studies. This paper describes developing the model to analyse knee loads among patients with meniscus injuries treated with a novel surgical technique. Personalized patient data were collected from their knee magnetic resonance imaging scans and knee isokinetic measurements performed at 60 deg/s angular velocity. The knee joint loads estimated with the model proposed in this work demonstrated higher compressive forces in the knee joint, indicating the need for greater caution when using isokinetic measurements safely after meniscus-save arthroscopy surgery.