Título: Adjustable Polycentric Mechanism for External Knee Joint Prosthesis Based on the Instantaneous Center of Rotation

Autor(es): HIDROBO MORENO RAUL SEBASTIAN, TOBAR SUBIA CONTENTO LUZ MARIA, VALENCIA AGUIRRE FERNANDO VINICIO

Fecha de publicación: 03-may-2024

Resumen: In this study, we present the design of an adjustable mecha- nism for external knee joint prostheses, with the aim of improving adap- tation to the user and approaching natural kinematics. To achieve this mechanism, some commercial prostheses were analyzed to understand their functioning and determine their kinematics based on the Instanta- neous Center of Rotation. From the different curves obtained for each prosthesis, a configuration of elements was proposed to approach the desired trajectories. With this base configuration, the knee joint was designed and simulated and a rapid prototype was made to validate its correct functioning. The results show that the proposed adjustable mech- anism can improve the adaptation of external knee prostheses to the user and approach natural kinematics.

Palabras clave: Mechanism · Knee prosthesis · Instantaneous Center of Ro- tation · kinematics.

DOI: https://doi.org/10.1007/978-3-031-52258-1_9

ISSN: 2367-3389

Tipo publicación: Artículo