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Understanding EMG/NCS: Diagnosing Nerve and Muscle Problems

Understanding EMG/NCS: Diagnosing Nerve and Muscle Problems | Rosebank

Have you ever had an arm or leg that felt numb, weak, or tingly? Well, EMG (Electromyography) and NCS (Nerve Conduction Studies) are special tests that help doctors find out what's happening with your muscles and nerves when they don’t work quite right.


What is EMG?

Imagine your muscles are like the motors in a toy car. When the motor gets power from the battery, the car moves. In your body, your nerves send signals to your muscles, telling them to move. The EMG test uses a tiny needle to listen to your muscles’ signals. The doctor will place this needle in a muscle and ask you to move it or relax. The needle picks up the tiny electric signals from your muscles and helps the doctor figure out if something’s wrong, like if the nerve isn’t sending the right signals or if the muscle is not working properly.


What is NCS?

The NCS test looks at how fast the signals travel through your nerves. Little sticky pads are placed on your skin, and the doctor sends a small, safe electric pulse through your nerves. It’s kind of like giving your nerves a quick “zap” to see how fast they respond. This helps the doctor find out if a nerve is hurt or not working well.


Why Are These Tests Important?

EMG and NCS help doctors figure out if nerves or muscles aren’t working properly and why you might feel pain, numbness, or weakness. They give the doctor important clues to help make you feel better!

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