Ultrasonography for Diagnosing Carpal Tunnel Syndrome: A Meta-analysis of Diagnostic Test Accuracy
Ultrasound in Medicine and Biology, 05/17/2012
Evidence Based Medicine
Tai TW et al. – A greater cross–sectional area (CSA) of the median nerve at the carpal tunnel inlet (CSA–I) and a greater flattening ratio at the level of the hamate were seen in carpal tunnel syndrome (CTS) wrists than in control wrists. A CSA–I ≥9 mm2 is the best single diagnostic criterion, with a diagnostic odds ratio of 40.4 (sensitivity 87.3%, specificity 83.3%).