4.6 Article

Molecular and imaging biomarkers of local inflammation at 2 years after anterior cruciate ligament injury do not associate with patient reported outcomes at 5 years

期刊

OSTEOARTHRITIS AND CARTILAGE
卷 28, 期 3, 页码 356-362

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.joca.2019.12.010

关键词

Anterior cruciate ligament injury; Biomarkers; Inflammation; Synovitis; Patient reported outcomes

资金

  1. Swedish Research Council
  2. Medical Faculty of Lund University
  3. Region Skane
  4. Governmental funding of clinical research within the national health services (ALF)
  5. Swedish Rheumatism Association
  6. Thelma Zoegas Fund
  7. Stig & Ragna Gorthon Research Foundation
  8. Swedish National Centre for Research in Sports
  9. Crafoord Foundation
  10. Tore Nilsson Research Fund
  11. Pfizer Global Research

向作者/读者索取更多资源

Objective: To estimate the association between molecular or imaging inflammatory biomarkers at 2 years after anterior cruciate ligament (ACL) injury and patient-reported outcomes at 5 years. Methods: For 116 ACL-injured patients, molecular biomarkers of inflammation (synovial fluid and serum cytokines) and Hoffa- and effusion-synovitis as visualized on magnetic resonance imaging (MRI) were assessed 2 years post-injury. Knee injury and Osteoarthritis Outcome Score (KOOS) and SF-36 were assessed at 2 and 5 years. We used multiple imputation to handle biomarker values that were below the level of detection or missing, and linear regression for statistical analyses. Results: None of the synovial fluid cytokines or imaging biomarkers of inflammation at 2 years were associated with any of the patient-reported outcomes at 5 years. With each log10 unit higher of serum tumor necrosis factor concentration the knee-related quality of life of KOOS was increased (i.e., better outcome) by 35 (95% confidence interval 7 to 63) points. No other serum biomarker measured at 2 years was associated with patient-reported outcome at 5 years. Conclusion: Local joint inflammation assessed by biomarkers in synovial fluid and Hoffa- and effusion-synovitis on MRI at 2 years after an ACL injury did not associate with patient-reported outcomes at 5 years. Thus, chronic inflammation in the ACL-injured knee, as reflected by the biomarkers studied here, seems not to be a key determinant for the long-term patient-reported outcomes. (C) 2020 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved.

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