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The Scientific World Journal
Volume 2014 (2014), Article ID 657906, 6 pages
Clinical Study

Sonographic Wrist Measurements and Detection of Anatomical Features in Carpal Tunnel Syndrome

1Department of Plastic and Hand Surgery, University Hospital, Inselspital, University of Bern, Freiburgstraße, 3010 Bern, Switzerland
2Etude Suisse de Cohorte VIH, CHUV, Bipôle 2, Route de la Corniche 10, 1010 Lausanne, Switzerland

Received 5 August 2013; Accepted 1 December 2013; Published 4 February 2014

Academic Editors: D. Sakai and R. W. Selles

Copyright © 2014 Esther Vögelin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Introduction. This study compares anatomical findings at wrist level in patients with known carpal tunnel syndrome (CTS) and controls by ultrasonography (US). Material and Methods. Wrist-US investigations of 28 consecutive patients with 38 diagnosed, idiopathic CTS were compared to 49 healthy volunteers without history of CTS. Internal wrists dimensions, the presence of flexor muscle bellies in the carpal tunnel, and cross-sectional area of the median nerve were analyzed. The findings were correlated to gender, age, and BMI. Results. US demonstrated a square internal carpal tunnel configuration in CTS patients compared to controls ( ). Patients with CTS showed a trend towards the presence of flexor muscles bellies in the carpal tunnel (odds ratio 1.77, 95% CI 0.337–8.33). CTS was present in women with higher BMI ( ). Conclusion. US allowed detection of specific anatomical features at wrist level in CTS patients. This observation may enable—following confirmation in larger prospective studies—risk evaluation for CTS development.