RT Journal Article
SR Electronic
T1 Ultrasound of Subtalar Joint Synovitis in Patients with Rheumatoid Arthritis: Results of an OMERACT Reliability Exercise Using Consensual Definitions
JF The Journal of Rheumatology
JO J Rheumatol
FD The Journal of Rheumatology
SP 351
OP 359
DO 10.3899/jrheum.171490
VO 46
IS 4
A1 George A.W. Bruyn
A1 Heidi J. Siddle
A1 Petra Hanova
A1 Félicie Costantino
A1 Annamaria Iagnocco
A1 Andrea Delle Sedie
A1 Marwin Gutierrez
A1 Hilde B. Hammer
A1 Elizabeth Jernberg
A1 Damien Loeille
A1 Mihaela C. Micu
A1 Ingrid Moller
A1 Carlos Pineda
A1 Bethan Richards
A1 Maria S. Stoenoiu
A1 Takeshi Suzuki
A1 Lene Terslev
A1 Violeta Vlad
A1 Robert Wonink
A1 Maria-Antonietta d’Agostino
A1 Richard J. Wakefield
YR 2019
UL http://www.jrheum.org/content/46/4/351.abstract
AB Objective. To evaluate the intraobserver and interobserver reliability of the ultrasonographic (US) assessment of subtalar joint (STJ) synovitis in patients with rheumatoid arthritis (RA).Methods. Following a Delphi process, 12 sonographers conducted an US reliability exercise on 10 RA patients with hindfoot pain. The anteromedial, posteromedial, and posterolateral STJ was assessed using B-mode and power Doppler (PD) techniques according to an agreed US protocol and using a 4-grade semiquantitative grading score for synovitis [synovial hypertrophy (SH) and signal] and a dichotomous score for the presence of joint effusion (JE). Intraobserver and interobserver reliability were computed by Cohen’s and Light’s κ. Weighted κ coefficients with absolute weighting were computed for B-mode and PD signal.Results. Mean weighted Cohen’s κ for SH, PD, and JE were 0.80 (95% CI 0.62–0.98), 0.61 (95% CI 0.48–0.73), and 0.52 (95% CI 0.36–0.67), respectively. Weighted Cohen’s κ for SH, PD, and JE in the anteromedial, posteromedial, and posterolateral STJ were −0.04 to 0.79, 0.42–0.95, and 0.28–0.77; 0.31–1, −0.05 to 0.65, and −0.2 to 0.69; 0.66–1, 0.52–1, and 0.42–0.88, respectively. Weighted Light’s κ for SH was 0.67 (95% CI 0.58–0.74), 0.46 (95% CI 0.35–0.59) for PD, and 0.16 (95% CI 0.08–0.27) for JE. Weighted Light’s κ for SH, PD, and JE were 0.63 (95% CI 0.45–0.82), 0.33 (95% CI 0.19–0.42), and 0.09 (95% CI −0.01 to 0.19), for the anteromedial; 0.49 (95% CI 0.27–0.64), 0.35 (95% CI 0.27–0.4), and 0.04 (95% CI −0.06 to 0.1) for posteromedial; and 0.82 (95% CI 0.75–0.89), 0.66 (95% CI 0.56–0.8), and 0.18 (95% CI 0.04–0.34) for posterolateral STJ, respectively.Conclusion. Using a multisite assessment, US appears to be a reliable tool for assessing synovitis of STJ in RA.