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67 Theoretical impact of workplace-based primary prevention of carpal tunnel syndrome in a french region: a pilot study
  1. Y Roquelaure1,
  2. A Petit1,
  3. E Chazelle2,
  4. A Descatha3,
  5. B Evanoff4,
  6. J Bodin1,
  7. N Fouquet1,2
  1. 1INSERM, U1085, IRSET, ESTER Team, University of Angers, Angers, France
  2. 2French national public health agency, Direction of Occupational Health, Saint-Maurice, France
  3. 3INSERM UMS 011, University Versailles St-Quentin, Versailles, France
  4. 4Washington University School of Medicine, Division of General Medical Sciences, St. Louis, USA


Introduction To assess the theoretical impact of workplace-based primary interventions designed to reduce exposure to personal and/or work-related risk factors for carpal tunnel syndrome (CTS).

Methods Cases of CTS were assessed using regional hospital discharge records for persons aged 20–59 in 2004. Using work-related attributable fractions (AFEs), we estimated the number of work-related cases of CTS (WR-CTS) in high-risk jobs. We simulated three theoretical scenarios of workplace-based primary prevention for jobs at risk: a mono-component work-centred intervention reducing the incidence of WR-CTS by 10% (10%-WI), and multicomponent global interventions reducing the incidence of all surgical cases of CTS by 5% and 10% by targeting personal and work risk factors.

Result Nine jobs at high risk of CTS were identified in the region, amounting to 1,618 [1,143–2,233] CTS cases, of which 952 [488–1,575] were WR-CTS. The 10%-WI, 5% GI and 10% GI hypothetically prevented 95 [49–158], 81 [57–112] and 162 [114–223] CTS cases, respectively. The hypothetical preventive efficiency varied depending on the job. The 10% GI had the greatest impact regardless of the job. The impact of the 10%-WI interventions was high only in jobs at highest risk and AFEs (e.g. food industry jobs). The 10%-WI and 5% GI had a similar impact for moderate-risk jobs (e.g. healthcare jobs).

Discussion This study found that work-related CTS cases were concentrated in several high-risk jobs. Simulated workplace-based WI and GI showed that preventive efficiency varied depending on the intervention design, the number of workers in different jobs and the proportion of work-related CTS. This suggests that prevention efforts to reduce exposure to work-related risk factors should focus on high-risk jobs. Reducing CTS rates will also require strategies to reduce personal risk factors, particularly in jobs with low levels of work-related risk of CTS.

  • carpal tunnel syndrome
  • simulation
  • preventive efficiency

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