The human body uses electrical activity to create movement, feel sensations, pain, hearing, vision, balance, etc. EMG/NCS are procedures which utilize electrical currents and thin needles to evaluate nerve and muscle function in the human body; typically, in the arms, legs, neck, and lower back. These examinations are usually requested when patients have complaints of cramps, pain, numbness, tingling, and/or weakness. Think of it as an electrician looking at the wiring in your house. The wiring can be complicated, often can’t be seen, and therefore it can be difficult to identify the problem. The nervous system in your body is very similar.

The results of your EMG and NCS can help your doctor pinpoint a specific diagnosis for you. Some common diagnoses we see are peripheral nerve injuries such as carpal tunnel syndrome, cubital tunnel syndrome, pinched nerves in the neck/back, neuropathies from diseases such as diabetes, and many other types of injuries or illnesses related to the neuromuscular system. It’s most effectively used in conjunction with a review of your medical history, a physical exam, and imaging studies. EMG and NCS procedures are another useful tool your physician uses to better understand and treat your medical condition.