Giovanni Traetta
Evaluation of Biceps Brachii Reinnervation Following Nerve Transfer Surgery.
Rel. Marco Gazzoni, Taian Martins. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Biomedica, 2024
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Abstract
Brachial Plexus Injuries (BPIs) often lead to significant motor function impairment, severely limiting a patient's ability to control the affected muscles. Nerve transfer surgery is a commonly used intervention designed to restore muscle function by reinnervating paralyzed muscles. This study aims to evaluate the effectiveness of reinnervation in the biceps brachii following nerve transfer surgery, using High-Density Surface Electromyography (HD-sEMG) and measurements of functional force production. The study involved patients who had undergone nerve transfer surgery after BPI, with data collected from both healthy and affected biceps. HD-sEMG signals and force measurements were recorded during specific motor tasks. Patients performed both trapezoidal contractions and fatiguing tasks at two distinct force levels: 20\% and 60\% of Maximum Voluntary Contraction (MVC).
The data collected allowed for an in-depth analysis of Motor Unit (MU) activation patterns and an assessment of the quality of force control in both conditions
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