Joint positions matter for ultrasound examination of RA patients—increased power Doppler signal in neutral versus flat position of hands

Published on Aug 1, 2017in Rheumatology5.149
Rusmir Husic7
Estimated H-index: 7
(University of Graz),
Angelika Lackner5
Estimated H-index: 5
(University of Graz)
+ 2 AuthorsChristian Dejaco29
Estimated H-index: 29
(University of Graz)
Abstract Position of joints might influence the result of US examination in patients with RA. The purpose of this work was to compare grey-scale (GS) and power Doppler (PWD) findings obtained in neutral vs flat position of hands. A cross-sectional study of 42 RA patients with active disease. Two dimensional and 3D sonography of wrists and MCP joints were conducted in two different joint positions: neutral position, which is a slight flexion of the fingers with relaxed extensor muscles; and flat position, where all palm and volar sides of fingers touch the Table. Two dimensional GS synovitis (GSS) and PWD signals were scored semi-quantitatively (0-3). For 3D sonography, the percentage of PWD voxels within a region of interest was calculated. GSS was not quantified using 3D sonography. Compared with neutral position, 2D PWD signals disappeared in 28.3% of joints upon flattening. The median global 2D PWD score (sum of all PWD scores of an individual patient) decreased from 8 to 3 ( P
  • References (32)
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#2Richard J. Wakefield (University of Leeds)H-Index: 58
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