Diagnostic Values of Tibialis Anterior H-reflex in the Single L5 Radiculopathy.
- Author:
Yun Ki KIM
1
;
Seung Hyun CHUNG
;
Yong Taek LEE
Author Information
1. Department of Physical Medicine & Rehabilitation, Masan Samsung Hospital, Sungkyunkwan University School of Medicine, Korea. csh68@hanmir.com
- Publication Type:Original Article
- Keywords:
H-reflex;
Tibialis anterior;
L5 radiculopathy
- MeSH:
Diagnosis;
H-Reflex*;
Humans;
Peroneal Nerve;
Radiculopathy*;
Reflex;
Sensitivity and Specificity
- From:Journal of the Korean Academy of Rehabilitation Medicine
2003;27(5):712-716
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: To evaluate the values of H-reflex from tibialis anterior in the diagnosis of L5 radiculopathy. METHOD: The subjects were 37 patients and 30 normal controls. The patient group was composed of 28 patients with L5 radiculopathy and 9 patients with S1 radiculopathy, which were confirmed by clinical, radiological, and electrodiagnostic studies. Tibialis anterior H-reflex (TA-H reflex) was recorded from maximally contracting tibialis anterior muscle by averaging technique and submaximal stimulation of common peroneal nerve. Sensitivities and specificities were delineated from the several diagnostic criteria. RESULTS: In the normal controls, mean side to side difference in the TA-H reflex latency was 0.66+/-0.48 msec and mean amplitude ratio was 75+/-16%. The diagnostic criteria of abnormal TA-H reflex were latency difference above 1.62 msec and amplitude ratio less than 42.2%. The abnormal TA-H reflexes were shown in 17 out of 28 patients with L5 radiculopathy and 1 out of 9 patients with S1 radiculopathy. Sensitivity and specificity of TA-H reflex as a diagnostic criteria of L5 radiculopathy were 61% and 89%, respectively. CONCLUSION: Tibialis anterior H-reflex might be useful in the diagnosis of L5 radiculopathy.
