Académie royale de Médecine de Belgique


Vidéo et résumé de Serge Van Sint Jan

(Séance du 23 mars 2013) 


par S. VAN SINT JAN (Laboratoire d’Anatomie – ULB), invité.         

Although the musculoskeletal system (MSS) is one of the major anatomical systemsof the human body, the precise role of each of its hundreds of individual components (bones, joints, muscles, etc.) is still unclear. For several decades, modelling tools have been developed in order to increase our understanding between the MSS architecture, its normal physiology and clinical implications. Grossly, two modelling approaches can be adopted: - direct modelling; and – inverse modelling. Direct modelling is based on the construction of a model which components respect physical laws in order to achieve some tasks to be performed; it uses optimization techniques which usually lead to multiple solutions that are often difficult to validate. Inverse modelling builds models from data that can be acquired using data collection methods; such methods allow validation of the data included in the model, but unfortunately not all data required to build a full MSS model can be collected today. The respective advantages and defaults of each modelling method will be further discussed during the lecture.

The Laboratory of Anatomy, Biomechanics and Organogenesis (LABO) focuses her MSS-related modelling research to improve methods usable in a clinical environment. This research is based on validated data collection protocols such as medical imaging, motion analysis, electromyography, palpation, etc. The available data are combined into the final model using so-called data fusion methods. Current researches performed at LABO include: - the understanding of the mechanical role of some aponeurotic structures; - the behaviour of the various costovertebral joints at different lung volumes for several categories of individuals (normal, cystic fibrosis); - the description of finger kinematics during grasping; - the foot deformation during stance; - etc. Some examples of applications will be given during the lecture.


Ont pris part à la discussion : MM. les Prs Ch. Delloye et L. Hue.