Electrodiagnostic studies play an important role in the evaluation of patients suspected of having a myopathic disorder. They are used to exclude alternative diagnoses, confirm the presence of muscle disease,…
Clinical and electrical myotonia is caused by a small group of neuromuscular disorders. This article reviews myotonia and its differential diagnosis. The use of electrodiagnostic testing to evaluate the primary…
Peroneal or fibular neuropathy is the most frequent mononeuropathy encountered in the lower limb. In this article, the causes, clinical features, electrodiagnostic assessment, and the treatment of peroneal neuropathies are…
Electrodiagnosis, which includes nerve conduction and needle electromyographic studies, is an essential element in the evaluation of peripheral neuropathies. A systematic approach to the electrodiagnostic evaluation aids in clarifying the…
Electrodiagnostic testing has proved useful in helping to establish the diagnosis of amyotrophic lateral sclerosis by eliminating possible disease mimics and by demonstrating abnormalities in body areas that are clinically…
Sciatic neuropathy is the second most common neuropathy of the lower extremity and a common cause of foot drop. This article reviews the anatomy, clinical features, pathophysiology, and electrodiagnostic assessment…
Patients presumed to have lower limb symptoms localizing to the lumbar or lumbosacral plexus require rigorous electrophysiological evaluation. Entities that cause lumbosacral plexopathies may be patchy, asymmetrical and more diffuse…
This article describes the normal anatomy of the brachial plexus and its major terminal branches, as well as the major causes and clinical presentations of lesions of these structures. An…
The evaluation of patients with suspected lumbar radiculopathy is one of the most common reasons patients are referred for electrodiagnostic testing. The utility of this study depends on the expertise…
Ambulation requires significant motor coordination. Because of inherent differences in body proportions, level of coordination, motivation, and other factors, each individual gait pattern is unique. However, despite the existence of…
