Motor Unit Loss and Remodeling in Patients With Chronic Radiculopathy Using the EMG Filling Analysis.

ABSTRACT:

Introduction/aims

The way in which the EMG signal is progressively filled with motor unit potentials during increasing voluntary contraction provides valuable information about the motor units (MUs) in a muscle. Here, we demonstrate the application of the EMG filling method to detect MU loss and remodeling in patients with chronic radiculopathy.

Methods

Concentric needle EMG signals were recorded from the tibialis anterior of 19 radiculopathy patients and 18 healthy controls during voluntary ramped contractions increasing from 0 to maximum. The EMG filling process was analyzed by measuring the EMG filling factor and EMG amplitude during the contraction.

Results

The way in which the filling factor increased with increasing force differed (p < 0.001) between healthy con

SUBMITTER: Rodriguez-Falces J 

PROVIDER: S-EPMC12599610 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature