Muscle disorders are often evaluated by

First, an orthopedic surgeon should do an evaluation. Once he takes a family history and does an exam of the muscle, he may order further testing such as an MRI, an ultrasound, or he may do electromyography In this test they insert a small, thin needle directly into the muscle to test the muscles electrical activity. They may also want to do a biopsy where they remove a small sample for further testing in a lab.