The flexor carpi radialis H-reflex in polyneuropathy: Relations to conduction velocities of the median nerve and the soleus H-reflex latency

R.J. Schimsheimer, B.W. Ongerboer de Visser, B. Kemp, L.J. Bour

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Abstract

In 80 controls latencies of flexor carpi radialis (FCR) and in 94 controls latencies of soleus H-reflexes correlated well with length of the extremity, body height and age. Multiple regression equations using latency as a variable dependent on age and body height can be best used in practice when both reflexes are employed for demonstration of proximal pathology. The majority (69%) of 93 patients with various polyneuropathies showed abnormalities in both reflexes illustrating that proximal nerve segments are frequently involved. Four per cent had abnormal FCR H-reflexes with normal soleus H-reflexes whereas the reverse was found in 19% of the patients. Abnormal FCR H-reflexes occurred with normal motor and sensory conduction velocities in the peripheral part of the median nerve in 14%, whereas the reverse was seen in 12%, indicating that FCR H-reflex examination is a valuable supplement to conventional conduction studies for detection of electrophysiologically existing pathology.

Original languageEnglish
Pages (from-to)447-452
Number of pages6
JournalJournal of Neurology Neurosurgery and Psychiatry
Volume50
Issue number4
DOIs
Publication statusPublished - 1 Jan 1987
Externally publishedYes

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