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Clinical utility of reflex studies in assessing cervical radiculopathy
Author(s) -
Miller Thomas A.,
Pardo Richard,
Yaworski Ray
Publication year - 1999
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/(sici)1097-4598(199908)22:8<1075::aid-mus11>3.0.co;2-u
Subject(s) - reflex , medicine , physical examination , neuroimaging , neurological examination , ankle jerk reflex , magnetic resonance imaging , anesthesia , radiology , surgery , psychiatry
We prospectively studied the diagnostic utility of upper limb segmental reflexes in patients with suspected cervical radiculopathy (CR). Fifty‐three patients (29 men and 24 women), referred for electrodiagnostic testing, were positive for at least one of four clinical criteria for CR: abnormal (1) history, (2) motor (myotomal) examination, (3) sensory (dermatomal) examination, and (4) changes in deep tendon reflexes (DTR). All underwent electrodiagnostic assessment, needle electrode examination (NEE), specialized segmental reflexes (heteronymous and Hoffman's reflexes [H reflexes]), and neuroimaging. The clinical diagnosis was supported in all 32 patients who entered the study with two or more clinical signs for CR. Abnormal NEE was found in 90% of subjects with three clinical signs, 59% with two signs, and only 10% of those with one sign. H reflexes demonstrated a sensitivity of 72% and specificity of 85% for detection of CR and were particularly helpful when forming conclusions in the 21 subjects with only one clinical sign for CR. Specialized segmental H‐reflex studies of the upper limb were as sensitive and specific as neuroimaging (magnetic resonance imaging). © 1999 John Wiley & Sons, Inc. Muscle Nerve 22: 1075–1079, 1999