Knee Medial and Lateral Contact Forces Computed Along Subject-Specific Contact Point Trajectories of Healthy Volunteers and Osteoarthritic Patients

Abstract

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A Valid Model for Prediction Tibiofemoral Force for Healthy People Based on Static Optimization

“…Finally, the cost function for optimization was based on weight factors and that may be different from one subject to another. However, the results of the prediction were with the literature results [7], [37]- [39], [49], in Table I…”

“…Moreover, a subject of TKR with e-tibia from the 4 th grand challenge competition was used to achieve the validity of the model by comparing the tibiofemoral force prediction with measured e-tibia where the RMSE was 0.14, 0.09 and 0.19 BW for the medial, lateral and total tibia compartments. The diversity between people makes a generic model for prediction of the tibiofemoral force is a difficult task and that is why many competitions were held by ASME for that [6], [15] and many authors worked hard to achieve the best model [7], [43]. The muscles' forces were based on the moment arm calculation and the prediction of the force using static optimization.…”

“…Also, to introduce different treatment and rehabilitation strategies according to the symptoms and from the engineering point of view according to the kinematic and dynamics of the lower limb [6]. The diversity of the human body structure like the bone geometries appearing in the kinematics and knee points of contacts [2], [7], the muscles, and the ligaments parameters [8], [9], overcomes having a generic musculoskeletal model. Different knee features overcome deciding the suitable treatment for diseases…”