What are the Histological Correlates of EMG Findings?
EMG findings can be correlated with various histological features of muscle tissue. For instance:
Normal muscle tissue: Shows a consistent wave pattern with controlled electrical activity. Denervated muscle: Often shows spontaneous activity and fibrillations, indicating muscle fibers lacking nerve supply. Histology may reveal atrophy and changes in muscle fiber morphology. Myopathic changes: Characterized by small amplitude, short-duration motor unit potentials. Histologically, there may be evidence of muscle fiber necrosis, degeneration, and regeneration.
