Abstract
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.
Original language | English |
---|---|
Pages (from-to) | 211-217 |
Number of pages | 7 |
Journal | Acta Neurologica Scandinavica |
Volume | 96 |
Issue number | 4 |
Publication status | Published - 1997 |
Keywords
- Carpal tunnel syndrome
- Classification
- Disto-proximal ratio
- Neurophysiology
ASJC Scopus subject areas
- Clinical Neurology
- Neuroscience(all)