Determinación de las condiciones biomecánicas de marcha sobre superficies planas en persona con artrosis en rodilla para la obtención de curvas características mediante el uso de sensores inerciales

Abstract

The present research aimed to determine the biomechanical conditions of walking on flat surfaces in people with knee osteoarthritis, obtaining curves that can be compared with others, but without knee involvement. 7 Xsens MTw Awinda inertial sensors located in the pelvis, quadriceps, tibialis anteriors and feet were used. Three measurements were made to each adult and they were classified to establish average curves, those that presented anomalies or noise were discarded, for the study three types of statistical methods were used: RMSE, Pearson's correlation coefficient and the R2 determination coefficient. This pathology is one of the most common and frequent in comparison with other joints of the body, because the knee joint is a joint that "supports weight", that is, for every 4 kg of weight that we gain, our knee supports 18 kg more force when walking. People who are over 20% overweight have a 10-fold increase in risk of osteoarthritis [1]. The gait pattern, in addition to being affected by knee osteoarthritis, can be altered by causes such as overweight, height, footwear, hormonal pathologies and fractures and trauma, as a result of these affectations we have the elderly P2 with a coefficient of determination of 0.49 % in pelvic obliqueness, 0.84% in knee flexion and extension. The results were favorable, reaching expected results, which in the same way encourage that more people should be considered for the study, considering the state in which their disease is advanced, in order to have a characteristic curve according to the stage in which each older adult is.