Ulnar Neuropathy at the Elbow
Ulnar neuropathy at the elbow (UNE) is second only to median nerve entrapment at the wrist (i.e., carpal tunnel syndrome [CTS]) as the most common entrapment neuropathy affecting the upper…
Myotonic Muscle Disorders and Periodic Paralysis Syndromes
The myotonic muscle disorders and periodic paralysis syndromes compose a group of disorders characterized by muscle stiffness, pain, and sometimes weakness, which may be intermittent or constant. Evaluation of these…
Median Neuropathy at the Wrist
Median nerve entrapment at the wrist is the most common of all entrapment neuropathies and, consequently, is one of the most frequent reasons for referral for an electrodiagnostic (EDX) study….
Sciatic Neuropathy
Sciatic neuropathies are uncommon in the electromyography (EMG) laboratory. When they occur, patients often present in a manner similar to that of peroneal neuropathy. Indeed, a footdrop from an early…
Polyneuropathy
Nerve conduction studies and electromyography (EMG) play key roles in the evaluation of patients with suspected polyneuropathy. Although polyneuropathy has hundreds of potential causes, they can be grouped into several…
Radiculopathy
Radiculopathy is one of the most common diagnoses referred to any electromyography (EMG) laboratory. Even with the widespread use of magnetic resonance imaging, EMG continues to play an important role…
Radial Neuropathy
In the electromyography (EMG) laboratory, the radial nerve is studied less frequently than the median and ulnar nerves and their respective well-known lesions. Nevertheless, entrapment of the radial nerve does…
Approach to Pediatric Electromyography
In conjunction with the clinical examination, electrodiagnostic (EDX) studies frequently play a key role in the evaluation of neuromuscular disorders in infants and children. Indeed, there are a large number…
Approach to Electrodiagnostic Studies in the Intensive Care Unit
The majority of electrodiagnostic (EDX) studies are performed on outpatients, even in those electromyography (EMG) laboratories that are physically located within a hospital. However, in the past several years an…
