What is the frequency of the Carpal Tunnel Syndrome?
Studies aimed at this aspect do not give univocal results; this is understandable in view of the variables involved (different selection criteria, the job done, diagnosis criteria, etc.). A study conducted from 1983 to 1985 in Holland shows a rate of 3.4% in women and 0.6% in men; but it is estimated that CTS is present to a further 5.8% in undiagnosed women (De Krom et al. J Clin Epidemiol 1992; 45:373-6). The average annual occurrence calculated during the period 1961-1980 in Minnesota is 149 every 100,000 inhabitants/year for women and 52 for men, rough rate 99/100,000/year (Stevens et al. Neurology 1988; 38:134-8). A study carried out in the Sienese area from 1991 to 1997 (Mondelli M. et al. Toscana Medica July/August 1999) gives a rough rate of incidence of 326.2/100,000/year (135.1 for males and 506.9 for women), the standard incidence being 276.6/100,000/year. The average F: M incidence ratio is 3.8:1. The decade most represented for both sexes is that between 50 and 59 years.
