Abstract
Between 2000 and 2003, our staff performed sonographic examinations of the wrist on 183 patients with suspected carpal tunnel syndrome (CTS). The examination revealed CTS in 111 patients, providing information about the pathology of the median nerve and surrounding structures that was responsible for symptoms. In 72 patients (39.3%) with positive signs of CTS but negative sonographic findings, reduced nerve conduction was demonstrated by subsequent electrodiagnostic studies. This study demonstrated the sensitivity of sonography in detecting and localizing CTS-related alterations of the median nerve and of articular and periarticular structures. Moreover, sonography allowed dynamic real-time exploration of joint movement and possible modifications induced by disease. Based on these findings, we feel that sonography, which is minimally-invasive, simple, safe, repeatable and low-cost, should be considered the first-line study of choice for patients with suspected CTS. It must also be regarded as an effective diagnostic tool for postoperative follow-up of these patients.
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