Modelo músculo-esquelético del miembro inferior: un enfoque teórico en busca de la aplicabilidad clínica
AbstractBiomechanical analysis is a common tool in clinician settings for the analysis of subjects with motor abnormalities. However, the individual muscle forces behavior through of the gait cycle is not fully represented on the gait analysis. Musculoskeletal models represent a set of numerical parameters showing the interaction of the system bone-joint-muscles, providing more effective strategies in the analysis and subsequent therapeutic approach. The human musculoskeletal system is redundant and uses optimal selection criteria for developing a muscular movement. This leads to the use of mathematical optimization methods that utilize physiological mechanism to explain the principles and functional significance of muscle forces. A musculoskeletal model of the lower limb was developed in this paper. The model represents the sagittal plane of movement and it consists of eleven muscles. In this work were analyzed five subjects without abnormal gait. Muscle tissue was represented by a Hill-Type model. To solve the static optimization problem the SQP algorithm was used. Our estimations of the muscles force were compared with other musculoskeletal model, developed by other researcher groups. Through this work was possible to reflect the guidelines to follow in the developing a musculoskeletal model applicable in the clinical setting, helping to predict the functional behavior of muscles and the possible modifications from a pathological gait.