Functional deficits in carpal tunnel syndrome

Area of Science:

• Occupational Health
• Neurology
• Biomedical Engineering

Background:

• Carpal tunnel syndrome (CTS) is a significant occupational illness in the United States.
• The Wisconsin Test is a validated tool for assessing sensory and psychomotor functions.
• Industrial workers in high-risk jobs were studied to identify early signs of CTS.

Purpose of the Study:

• To determine if subtle sensory and motor deficits are observable in a working population at high risk for CTS.
• To evaluate the utility of the Wisconsin Test as an injury surveillance instrument for CTS.
• To correlate functional deficits with clinical diagnostic criteria for CTS.

Main Methods:

• 208 industrial workers (72 males, 136 females) participated in the study.
• Participants underwent symptom surveys, physical examinations, and nerve conduction tests.
• The Wisconsin Test battery was administered to assess sensory and psychomotor function.

Main Results:

• The most significant functional deficits were observed when nerve conduction tests were positive and accompanied by positive symptom surveys or physical exams.
• Symptoms alone did not significantly correlate with motor deficits.
• No significant sensory threshold differences were found using any single diagnostic criterion.

Conclusions:

• Quantifiable sensory and psychomotor deficits associated with CTS were identified in an industrial workforce.
• These deficits were most pronounced when clinical findings (symptoms, physical exam) aligned with nerve conduction test results.
• The study validates that clinical CTS diagnostic criteria correspond with measurable functional impairments.