This offer is for testing one body part— such as hand & wrist, foot & ankle, upper arm, knee & upper leg, neck, lower back or middle back— using a procedure called an Electromyogram, or “EMG” for short.
This test is performed in the office in less than an hour. Additional areas of the body can be tested during the same visit for $85 per area.
An EMG, also referred to as a myogram, is a test that is used to record the electrical activity of muscles in order to distinguish whether unexplained muscle weakness is caused by problems in the muscle itself or by a nerve disorder. When muscles are active, they produce an electrical current that is usually proportional to the level of the muscle activity. EMGs are often used to detect the abnormal electrical activity of muscle caused by diseases and conditions such as pinched nerves, inflammation of muscles, peripheral nerve damage (damage to nerves in the arms and legs), disc herniation, muscular dystrophy, amyotrophic lateral sclerosis (ALS) and myasthenia gravis.
Why is an EMG test done? An EMG is often performed when patients have unexplained muscle weakness. The EMG can also be used to detect true weakness, as opposed to weakness from reduced use because of pain or lack of motivation [sedentary behavior]. EMGs can also be used to isolate the level of nerve irritation or injury.
How is an intramuscular EMG done? A needle is inserted through the skin into the muscle. The needle serves as an electrode, detecting any electrical activity in the muscle. The patient may be asked to contract specific muscles (for example, to bend a leg after the electrode has been placed. The activity is displayed visually on an oscilloscope and may also be detected audibly with a speaker. Since skeletal muscles are often large, several needle electrodes may need to be placed at various locations to obtain an informative EMG.
The presence, size, and shape of the wave form (the action potential) produced on the oscilloscope provides information about the ability of the muscle to respond to nervous stimulation. Each muscle fiber that contracts produces an action potential. The size of the muscle fiber affects the rate (how frequently an action potential occurs) and the size (the amplitude) of the action potential.
This test is performed in the office in less than an hour. This offer covers any one area. Additional areas can be added on in the same visit for $85 per additional area.
A copy of the results can be provided and a report can be emailed with 24 hours.
Created on: 10/15/10