{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T03:42:34Z","timestamp":1792122154503,"version":"4.4.0"},"reference-count":16,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2013,8,22]],"date-time":"2013-08-22T00:00:00Z","timestamp":1377129600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2013,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:label\/><jats:p>The objective of this study was to evaluate the correlations between deformation and displacement of median nerve and flexor tendons during finger motion in the carpal tunnel for both carpal tunnel syndrome (CTS) patients and healthy controls. Sixty\u2010two wrists of 31 asymptomatic volunteers and fifty\u2010one wrists of 28 idiopathic CTS patients were evaluated by ultrasound. The displacement of the median nerve and the middle finger flexor digitorum superficialis (FDS) tendon, as well as area, perimeter, aspect ratio of a minimum enclosing rectangle, and circularity of the median nerve were measured in finger extension and flexion positions. Deformation indices were defined as the ratios of indices in finger extension and flexion positions. The correlations between displacement and deformation indices were evaluated. There were significant correlations between nerve palmar\u2013dorsal displacement and deformation indices (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). The aspect ratio deformation index showed the strongest correlation to palmar\u2013dorsal displacement of the nerve (\u22120.572, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). This study showed that there is a relationship between median nerve deformation indices and nerve palmar\u2013dorsal displacement in the carpal tunnel. Since the highest correlations were between palmar\u2013dorsal nerve displacement direction and aspect ratio deformation index, these parameters may be helpful to understand the pathophysiology of CTS. \u00a9 2013 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. 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