Class-efficacy of hyaluronan/hylan versus placebo in knee osteoarthritis: A Cochrane Review

Paper


Bellamy, N., Campbell, J., Gee, T., Robinson, V., Bourne, R. and Wells, G.. 2005. "Class-efficacy of hyaluronan/hylan versus placebo in knee osteoarthritis: A Cochrane Review." van de Putte, L. (ed.) Annual European Congress of Rheumatology - EULAR 2005 . Vienna 08 - 11 Jun 2005 Nijmegen, Netherlands .
Paper/Presentation Title

Class-efficacy of hyaluronan/hylan versus placebo in knee osteoarthritis: A Cochrane Review

Presentation TypePaper
AuthorsBellamy, N. (Author), Campbell, J. (Author), Gee, T. (Author), Robinson, V. (Author), Bourne, R. (Author) and Wells, G. (Author)
Editorsvan de Putte, L.
Journal or Proceedings TitleAnnals of the Rheumatic Diseases, vol. 64, Suppl. 3
Annals of the Rheumatic Diseases
Journal Citation64 (Supplement 3), pp. 478-478
Number of Pages1
Year2005
Place of PublicationNijmegen, Netherlands
ISSN0003-4967
1468-2060
Web Address (URL) of Paperhttp://www.abstracts2view.com/eular/view.php?nu=EULAR05L1_2005SAT0218
Conference/EventAnnual European Congress of Rheumatology - EULAR 2005
Event Details
Annual European Congress of Rheumatology - EULAR 2005
Event Date
08 to end of 11 Jun 2005
Event Location
Vienna
Abstract

Background: Osteoarthritis (OA) is the most common form of chronic arthritis worldwide. Hyaluronan and hylan (HA) products provide opportunity for local treatment of individual OA knee joints.

Objectives: To evaluate the class-efficacy of HA products compared to placebo (PL) in the treatment of knee OA as part of a Cochrane review of viscosupplementation.

Methods: Electronic searches were conducted of EMBASE, MEDLINE, PREMEDLINE up to July 2003 and CENTRAL up to the 2Q of 2003. Human, randomised, controlled trials (RCTs) were included. Methodological quality was assessed using the Jadad criteria by 2 reviewers. Data on the OARSI and OMERACT core set clinical outcome measures were extracted where possible. Weighted mean differences (WMD), based on unadjusted post-test scores, and 95% confidence intervals (CI) were calculated for continuous outcomes measured on the same scale. The standardised mean difference (SMD) and 95% CI were calculated for continuous outcomes measured on different scales. Relative risk was calculated for dichotomous outcome measures. Heterogeneity was tested with chi square test; when detected a random effect (RE) model was used rather than a fixed effect model. Analysis used RevMan 4.1.1 software.

Results: 37 RCTs included comparisons of HA and PL. Statistically significant differences were detected between HA and PL at 1-4 weeks (pain on weight-bearing (100 mm VAS) WMD (RE) was -7.92 (95% CI, -11.70 to -4.14) p=0.00004, Lequesne Index (0-24) WMD (RE) was -1.21 (95% CI, -2.19 to -0.22) p=0.02), 5-13 weeks (pain on weight-bearing WMD (RE) was -12.97 (95% CI, -18.00 to -7.93) p<0.00001, WOMAC pain SMD was -0.33 (95% CI, -0.55 to -0.10) p=0.004 and WOMAC function SMD was -0.56 (95% CI, -0.89 to -0.24) p=0.0007, Lequesne Index WMD was -1.30 (95% CI, -1.93 to -0.67) p=0.00005, flexion WMD was 7.60 (95% CI, 0.46 to 14.74) p=0.04, and 14-26 weeks (pain on weight-bearing WMD (RE) was -9.04 (95% CI, -14.83 to -3.24) p=0.002, WOMAC pain (100 mm VAS) WMD was -5.66 (95% CI, -10.06 to -1.26) p=0.01) post-injection.

Conclusion: These data support the evidence for efficacy of this class of intervention on multiple efficacy variables. The beneficial effects are time and variable dependent. The pooled analyses address issues relating to class characteristics and may not be shared to the same extent by each individual HA product. The by-product analyses (data not shown) provide support for the use of those HA products for which the effect is not only statistically significant but also clinically important.

Keywordsosteoarthritis; knee
ANZSRC Field of Research 2020320223. Rheumatology and arthritis
Public Notes

File reproduced in accordance with the copyright policy of the publisher/author.

Byline AffiliationsUniversity of Queensland
London Health Sciences Centre, Canada
Griffith University
No affiliation
University of Ottawa Heart Institute, Canada
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