Biomaterial Database

Electrophysiologic approaches to the diagnosis of entrapment neuropathies. 1985

M Hallett

Identifying and localizing nerve entrapments is a major problem in electrodiagnosis. Pathophysiology in the different conditions is diverse; a common but not invariable situation is focal demyelination with consequent focal slowing of nerve conduction. Many techniques of nerve conduction and electromyography (EMG) are available. The precise anatomy and the behavior of each syndrome has to be understood in order to develop appropriate strategies to use these techniques to best advantage.

UI	MeSH Term	Description	Entries
D009046	Motor Neurons	Neurons which activate MUSCLE CELLS.	Neurons, Motor,Alpha Motorneurons,Motoneurons,Motor Neurons, Alpha,Neurons, Alpha Motor,Alpha Motor Neuron,Alpha Motor Neurons,Alpha Motorneuron,Motoneuron,Motor Neuron,Motor Neuron, Alpha,Motorneuron, Alpha,Motorneurons, Alpha,Neuron, Alpha Motor,Neuron, Motor
D009408	Nerve Compression Syndromes	Mechanical compression of nerves or nerve roots from internal or external causes. These may result in a conduction block to nerve impulses (due to MYELIN SHEATH dysfunction) or axonal loss. The nerve and nerve sheath injuries may be caused by ISCHEMIA; INFLAMMATION; or a direct mechanical effect.	Entrapment Neuropathies,Nerve Entrapments,External Nerve Compression Syndromes,Internal Nerve Compression Syndromes,Nerve Compression Syndromes, External,Nerve Compression Syndromes, Internal,Compression Syndrome, Nerve,Compression Syndromes, Nerve,Entrapment, Nerve,Entrapments, Nerve,Nerve Compression Syndrome,Nerve Entrapment,Neuropathies, Entrapment,Neuropathy, Entrapment,Syndrome, Nerve Compression,Syndromes, Nerve Compression
D009431	Neural Conduction	The propagation of the NERVE IMPULSE along the nerve away from the site of an excitation stimulus.	Nerve Conduction,Conduction, Nerve,Conduction, Neural,Conductions, Nerve,Conductions, Neural,Nerve Conductions,Neural Conductions
D009475	Neurons, Afferent	Neurons which conduct NERVE IMPULSES to the CENTRAL NERVOUS SYSTEM.	Afferent Neurons,Afferent Neuron,Neuron, Afferent
D011930	Reaction Time	The time from the onset of a stimulus until a response is observed.	Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D002349	Carpal Tunnel Syndrome	Entrapment of the MEDIAN NERVE in the carpal tunnel, which is formed by the flexor retinaculum and the CARPAL BONES. This syndrome may be associated with repetitive occupational trauma (CUMULATIVE TRAUMA DISORDERS); wrist injuries; AMYLOID NEUROPATHIES; rheumatoid arthritis (see ARTHRITIS, RHEUMATOID); ACROMEGALY; PREGNANCY; and other conditions. Symptoms include burning pain and paresthesias involving the ventral surface of the hand and fingers which may radiate proximally. Impairment of sensation in the distribution of the median nerve and thenar muscle atrophy may occur. (Joynt, Clinical Neurology, 1995, Ch51, p45)	Compression Neuropathy, Carpal Tunnel,Entrapment Neuropathy, Carpal Tunnel,Amyotrophy, Thenar, Of Carpal Origin,Median Neuropathy, Carpal Tunnel,Carpal Tunnel Syndromes,Syndrome, Carpal Tunnel,Syndromes, Carpal Tunnel
D004568	Electrodiagnosis	Diagnosis of disease states by recording the spontaneous electrical activity of tissues or organs or by the response to stimulation of electrically excitable tissue.	Electrodiagnoses
D004576	Electromyography	Recording of the changes in electric potential of muscle by means of surface or needle electrodes.	Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014459	Ulnar Nerve	A major nerve of the upper extremity. In humans, the fibers of the ulnar nerve originate in the lower cervical and upper thoracic spinal cord (usually C7 to T1), travel via the medial cord of the brachial plexus, and supply sensory and motor innervation to parts of the hand and forearm.	Nerve, Ulnar,Nerves, Ulnar,Ulnar Nerves