Neurophysiological classification and sensitivity in 500 carpal tunnel syndrome hands
Objectives - To evaluate the following points about carpal tunnel syndrome (CTS): 1) characterization of a wide population; 2) sensitivity of electrodiagnostic tests, and particularly the contribution of disto-proximal ratio test; 3) validity of a neurophysiological classification developed by us. M...
Published in: | Acta Neurologica Scandinavica |
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Main Authors: | , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
1997
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Subjects: | |
Online Access: | http://hdl.handle.net/11571/1180703 https://doi.org/10.1111/j.1600-0404.1997.tb00271.x |
Summary: | Objectives - To evaluate the following points about carpal tunnel syndrome (CTS): 1) characterization of a wide population; 2) sensitivity of electrodiagnostic tests, and particularly the contribution of disto-proximal ratio test; 3) validity of a neurophysiological classification developed by us. Material and methods - Prospective study in 500 hands with CTS symptoms. Neurophysiological ''standard'' tests were always performed: sensory nerve conduction velocity (SNCV) first- and third digit-wrist and distal motor latency (DML). In ''standard negative'' hands disto-proximal ratio technique (R) was performed. Neurophysiological classification: Extreme CTS (absence of median motor, sensory responses), Severe (absence of sensory response, abnormal DML), Moderate (abnormal SNCV, abnormal DML), Mild (abnormal SNCV, normal DML), Minimal (abnormal R or other segmental/comparative test, normal standard tests). Results - Sensibility of standard tests: 77%. R increased the diagnostic yield by 20%. CTS classification appeared reliable with significant differences between groups. Conclusion - R is a useful test, the classification may be useful in clinical/therapeutical decisions. |
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