Study on the pathological rehabilitation process of elbow joint based on bioelectrical impedance spectroscopy

Postoperative adhesion and contracture of the elbow joint are common complications that can severely limit joint mobility and affect patients’ daily lives. Based on the in-depth study and optimization of the Cole–Cole model and VMD-HHT model, this study used bioimpedance spectroscopy (BIS) technology to design a new elbow orthosis and its corresponding control algorithm. The effectiveness of the designed control system was verified by experiments on rabbits and experimental simulations based on the experimental data. The experimental results indicate that the control system can significantly improve the range of motion of the elbow joint, reduce the incidence of postoperative adhesion and contracture, thereby improve the rehabilitation effect of patients. Furthermore, the results of this study not only provide a solid theoretical basis for the development of control algorithms for portable rehabilitation devices, but also provide strong algorithmic support for the analysis of pathological signals.