Electromyogram (EMG)
An electromyogram (EMG) is a diagnostic test that measures the electrical activity of muscles and the nerves controlling them, using needle or surface electrodes. It helps identify nerve compression, muscle disorders, and conditions such as carpal tunnel syndrome or neuropathy.
What is an electromyogram (EMG)?
An electromyogram (EMG) is a diagnostic test that measures the electrical activity of muscles and the nerves that control them, using either needle electrodes inserted into the muscle or surface electrodes on the skin. The readings show how well signals travel from nerve to muscle.
It is often performed alongside nerve conduction studies to build a fuller picture of nerve and muscle health.
Why does an EMG matter?
An electromyogram (EMG) helps clinicians pinpoint problems such as nerve compression, muscle disorders, and conditions like carpal tunnel syndrome or peripheral neuropathy. The findings can distinguish a nerve issue from a muscle issue, guiding treatment.
Accurate diagnosis from an EMG can shape decisions about therapy, further testing, or whether a surgical intervention is warranted.
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