High-resolution ultrasonography of the carpal tunnel |
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Authors: | W Buchberger,G Sch n,K Strasser,W Jungwirth |
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Affiliation: | Department of Radiology, University of Innsbruck, Austria. |
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Abstract: | Twenty-eight wrists of 25 patients with carpal tunnel syndrome (CTS) and 28 wrists of 14 normal control subjects were studied with high-frequency real-time ultrasonography. Three general findings could be observed in CTS, regardless of its cause: swelling of the median nerve at the entrance of the carpal tunnel; flattening of the median nerve in the distal carpal tunnel; and increased palmar flexion of the transverse carpal ligament. Quantitative analysis proved these findings to be significant. We conclude that high-resolution sonography is able to diagnose median nerve compression in the carpal tunnel syndrome and to detect some of its potential causes. |
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