An New Energetic Approach to the Modeling of Human Joint Kinematics: Application to the Ankle

Conconi, Michele (2010) An New Energetic Approach to the Modeling of Human Joint Kinematics: Application to the Ankle, [Dissertation thesis], Alma Mater Studiorum Università di Bologna. Dottorato di ricerca in Meccanica applicata, 22 Ciclo. DOI 10.6092/unibo/amsdottorato/2765.
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The objective of this dissertation is to develop and test a predictive model for the passive kinematics of human joints based on the energy minimization principle. To pursue this goal, the tibio-talar joint is chosen as a reference joint, for the reduced number of bones involved and its simplicity, if compared with other sinovial joints such as the knee or the wrist. Starting from the knowledge of the articular surface shapes, the spatial trajectory of passive motion is obtained as the envelop of joint configurations that maximize the surfaces congruence. An increase in joint congruence corresponds to an improved capability of distributing an applied load, allowing the joint to attain a better strength with less material. Thus, joint congruence maximization is a simple geometric way to capture the idea of joint energy minimization. The results obtained are validated against in vitro measured trajectories. Preliminary comparison provide strong support for the predictions of the theoretical model.

Tipologia del documento
Tesi di dottorato
Conconi, Michele
Dottorato di ricerca
Scuola di dottorato
Ingegneria industriale
Settore disciplinare
Settore concorsuale
Parole chiave
Human Joint modelling, Passive Kinematics, Minimum Energy Prinicple, Wollf's Law, Ankle
Data di discussione
11 Maggio 2010

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