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Validation of a Biofidelic LS-DYNA Model and Comparison vs. a Traditional ATD Finite Element Model for Assessing Knee-thigh-hip Injuries

An enhanced Finite Element (FE) model of the human Knee-Thigh-Hip (KTH) is presented as a reliable mean for prediction of bone failure mechanism for a frontal knee impact. Improvements made to the original model are reported. The model is validated against a cadaver sled test. An identical finite element impact event was replicated with use of the LSTC dummy. The main terms of comparison were the axial femur force and the possibility to locate a potential bone fracture in the lower extremity. The KTH model gave more reliable results than the dummy model in terms of fracture prediction.