There are usually two parts to an EMG procedure: the nerve conduction study and the needle EMG. A nerve conduction study evaluates the nerves that control muscle movement, while a needle EMG assesses nerve activity within the muscles.
Abnormal EMG results usually indicate nerve or muscle damage. Unlike X-ray or MRI which takes a picture of muscles, bones and joints.
Electrodiagnostic studies provide useful information about how well your nerves and muscles are functioning.