When you have an orthopedic condition that affects the nerves, We may use a combination of electrodiagnostic studies to help him accurately diagnose your injury.
Electromyography (EMG) measures the electrical activity within muscles while nerve conduction velocity (NCV) tests measure how well the nerves work. They are typically performed at the same time to help diagnose nerve injuries and nerve compression conditions such as:
What is EMG?
Electromyography is a test that measures the electrical nerve impulses of muscles at rest and when contracted. A small needle electrode is placed into the muscle. The electrode, which detects electrical activity in that muscle, is connected to a recording device by a thin wire.
The machine first records what happens while the muscle is at rest (there should be no electrical activity), then it records the electrical activity detected when you tense the muscle. Different areas of the muscle or different muscles may be tested.
What is NCV?
Of the two tests, the nerve conduction velocity is usually conducted first. Flat electrodes are applied directly to the skin and small electric shocks stimulate specific nerves. NCV can help determine where the nerve injury is by measuring the speed and intensity of the electrical impulse traveling down a nerve. In damaged nerves, the electrical impulse will be slower and weaker.
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