Median nerve blood flow, cross-sectional area and tendon motion in carpal tunnel syndrome patients

Carpal tunnel syndrome (CTS) is a prevalent peripheral neuropathy due to median nerve compression. Non-neutral wrist posture and repetitive finger movement are proposed workplace risk factors for CTS. This study investigated median nerve blood flow, size, and tendon mechanics with ultrasound in 35 CTS patients. The effects of wrist posture and repetitive finger movement were also investigated. Results suggest that mild CTS patients are most sensitive to the negative effects of non-neutral wrist postures. Median nerve CSA generally distinguished between CTS severities. Tendon mechanics do not appear to differ between CTS patients of differing severities. Results from this investigation may benefit in the development of targeted CTS interventions and inform best practices for return to work policies.