Association between ultrasound-detected synovitis and knee pain: A population-based case-control study with both cross-sectional and follow-up data

Aliya Sarmanova, Michelle Hall, Gwen S. Fernandes, Archan Bhattacharya, Ana M. Valdes, David A. Walsh, Michael Doherty, Weiya Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

15 Citations (Scopus)

Abstract

Background: An important role for synovial pathology in the initiation and progression of knee osteoarthritis has been emphasised recently. This study aimed to examine whether ultrasonography-detected synovial changes associate with knee pain (KP) in a community population. Methods: A case-control study was conducted to compare people with early KP (n=298), established KP (n=100) or no KP (n=94) at baseline. Multinomial logistic regression was used to estimate the odds ratio (OR) and 95% confidence interval (CI) between groups adjusted for radiographic osteoarthritis (ROA) severity and other confounding factors. After 1year, 255 participants with early and established KP completed the follow-up questionnaire for changes in KP. Logistic regression with adjustment was used to determine predictors of KP worsening. Results: At baseline, effusion was associated with early KP (OR 2.64, 95% CI 1.57-4.45) and established KP (OR 5.07, 95% CI 2.74-9.38). Synovial hypertrophy was also associated with early KP (OR 5.43, 95% CI 2.12-13.92) and established KP (OR 13.27, 95% CI 4.97-35.43). The association with effusion diminished when adjusted for ROA. Power Doppler signal was uncommon (early KP 3%, established KP 2%, controls 0%). Baseline effusion predicted worsening of KP at 1year (OR 1.95, 95% CI 1.05-3.64). However, after adjusting for ROA, the prediction was insignificant (adjusted OR 0.95, 95% CI 0.44-2.02). Conclusions: Ultrasound effusion and synovial hypertrophy are associated with KP, but only effusion predicts KP worsening. However, the association/prediction is not independent from ROA. Power Doppler signal is uncommon in people with KP. Further study is needed to understand whether synovitis is directly involved in different types of KP.

Original languageEnglish
Article number281
JournalArthritis Research and Therapy
Volume19
Issue number1
DOIs
Publication statusPublished - 19 Dec 2017

Keywords

  • Cohort study
  • Knee pain
  • Osteoarthritis
  • Synovial changes
  • Synovitis
  • Ultrasound

Fingerprint Dive into the research topics of 'Association between ultrasound-detected synovitis and knee pain: A population-based case-control study with both cross-sectional and follow-up data'. Together they form a unique fingerprint.

Cite this