Triangular fibrocartilage of wrist: presentation on high resolution ultrasonography

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
H J ChiouM M Teng

Abstract

This study consisted of two parts. Part I is for detection of the normal triangular fibrocartilage by high resolution ultrasonography and Part II is a preliminary study to evaluate high resolution ultrasonography in the diagnosis of tears of the triangular fibrocartilage. Normally, the triangular fibrocartilage was seen in all cases in Part I as an inverse triangular structure of homogeneous hyperechogenicity on transverse and oblique sagittal scans at the level of the distal radioulnar joint. At its waist it measured from 2.3 to 4.2 mm (mean, 3.0 +/- 0.5 mm) on oblique sagittal scan and from 2.5 to 3.7 mm (mean, 3.2 +/- 0.4 mm) on transverse scan. Under normal conditions, the triangular fibrocartilage is thicker than 2.5 mm on both transverse and oblique sagittal sections with a confidence level of 95%. In Part II, eight of the 47 wrists were found to be hypoechoic in the triangular fibrocartilage region, which proved to be tears by arthrography. Six cases showed a homogeneous hyperchoic triangular fibrocartilage measuring from 1.8 to 2.8 mm (mean, 2.3 +/- 0.5 mm) in transverse section and from 0 to 2.2 mm (mean 1.2 +/- 1.1 mm) in oblique sagittal section; five of these proved to be tears by arthrography. In contrast, 33 wrist...Continue Reading

Citations

Nov 17, 2010·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Mihra S TaljanovicLee F Rogers
Dec 17, 2009·Skeletal Radiology·Atsuya WatanabeHiroshi Yoshioka
Jan 22, 2008·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Mihra S TaljanovicLee F Rogers
Nov 1, 2011·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Jay SmithJonathan T Finnoff
Oct 16, 2008·Journal of Clinical Ultrasound : JCU·Lionel PesquerJean-Pierre Tasu

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