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Journal of Ultrasound in Medicine, Vol 10, Issue 10 531-537, Copyright © 1991 by American Institute of Ultrasound in Medicine
High-resolution ultrasonography of the carpal tunnel
W. Buchberger, G. Schon, K. Strasser and W. Jungwirth
Department of Radiology, University of Innsbruck, Austria.
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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