AB1066 Diagnostic utility of the median/ulnar nerve cross-sectional area ratio in carpal tunnel syndrome

Abstract

Background: The most commonly used ultrasonographic measurements for the diagnosis of CTS are measurement of the median nerve cross-sectional area (m-CSA) at different levels of the carpal tunnel.1 The cross-sectional area of a nerve may differ according to biometric characteristics such as age, sex, height, weight and wrist thickness.2–4