Biomaterial Database

H reflex latency in radiculopathy. 1978

J A Schuchmann

This study was designed to evaluate whether the H reflex latency obtained from the triceps surae following tibial-nerve stimulation was of value in detecting and differentiating S1 from L5 radiculopathy. Thirty-two patients were studied, 15 with a definite unilateral L5 radiculopathy and 17 with a definite unilateral S1 radiculopathy. Data revealed a mean H reflex latency difference of 0.03 msec (range--0.1 to 0.2 msec) between the affected and unaffected extremities for the 15 patients with L5 radiculopathy and of 2.9 msec (range 1.3 to 4.1 msec) for the 13 patients with S1 radiculopathy where an H reflex could be recorded. The H reflex was unobtainable in the affected extremity in four of the patients with S1 radiculopathy. It is concluded that H reflex latency testing is a valuable tool in helping to differentiate S1 from L5 radiculopathy.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009422	Nervous System Diseases	Diseases of the central and peripheral nervous system. This includes disorders of the brain, spinal cord, cranial nerves, peripheral nerves, nerve roots, autonomic nervous system, neuromuscular junction, and muscle.	Neurologic Disorders,Nervous System Disorders,Neurological Disorders,Disease, Nervous System,Diseases, Nervous System,Disorder, Nervous System,Disorder, Neurologic,Disorder, Neurological,Disorders, Nervous System,Disorders, Neurologic,Disorders, Neurological,Nervous System Disease,Nervous System Disorder,Neurologic Disorder,Neurological Disorder
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
D012023	Reflex, Monosynaptic	A reflex in which the AFFERENT NEURONS synapse directly on the EFFERENT NEURONS, without any INTERCALATED NEURONS. (Lockard, Desk Reference for Neuroscience, 2nd ed.)	Monosynaptic Reflex
D003937	Diagnosis, Differential	Determination of which one of two or more diseases or conditions a patient is suffering from by systematically comparing and contrasting results of diagnostic measures.	Diagnoses, Differential,Differential Diagnoses,Differential Diagnosis
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
D005260	Female		Females
D006181	H-Reflex	A monosynaptic reflex elicited by stimulating a nerve, particularly the tibial nerve, with an electric shock.	H Reflex,H-Reflexes,H Reflexes,Reflex, H
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults