Análisis lineal en el dominio del tiempo de la estabilidad estática en personas con amputación transtibial unilateral

Abstract

Objective: To evaluate static postural behavior in the time domain in individuals with unilateral transtibial amputation compared to non-amputated subjects. Methodology: Static postural behavior in the time domain was assessed in 10 individuals with transtibial amputation (SAT) and 10 without amputation (SNA) using measurements from piezoelectric instrumented insoles of the center of pressure (CP). Parameters including CP trajectory excursion, CP velocity, range, RMS value, average amplitude, maximum and minimum amplitude were calculated for all these parameters in both anteroposterior and mediolateral directions. Results: Significant differences were found between the SAT and SNA groups in all parameters and in both directions (p<0.05). Both groups showed a preference for variation in the anteroposterior direction; however, the TAA group exhibited high variability in measurements in this direction. Conclusions: The findings may provide valuable insights into how amputation and prosthetics can influence the stability and balance of individuals, which could be useful in rehabilitation processes and the design of prosthetics aimed at improving the quality of life of this population. Financing: This scientific research article is derived from the research project "Application of clustering as a method for discriminating plantar pressure distribution in individuals with transtibial amputation," funded by Universidad Distrital Francisco José de Caldas, Bogotá, Colombia. Keywords: Linear analysis, transtibial amputees, postural control, static stability, posturography.