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The clinical and cost effectiveness of splints for thumb base osteoarthritis: a randomized controlled clinical trial

Abstract:

Objectives To investigate the clinical effectiveness, efficacy and cost effectiveness of splints (orthoses) in people with symptomatic basal thumb joint OA (BTOA).

Methods A pragmatic, multicentre parallel group randomized controlled trial at 17 National Health Service (NHS) hospital departments recruited adults with symptomatic BTOA and at least moderate hand pain and dysfunction. We randomized participants (1:1:1) using a computer-based minimization system to one of three treatment groups: a therapist supported self-management programme (SSM), a therapist supported self-management programme plus a verum thumb splint (SSM+S), or a therapist supported self-management programme plus a placebo thumb splint (SSM+PS). Participants were blinded to group allocation, received 90 min therapy over 8 weeks and were followed up for 12 weeks from baseline. Australian/Canadian (AUSCAN) hand pain at 8 weeks was the primary outcome, using intention to treat analysis. We calculated costs of treatment.

Results We randomized 349 participants to SSM (n = 116), SSM+S (n = 116) or SSM+PS (n = 117) and 292 (84%) provided AUSCAN Osteoarthritis Hand Index hand pain scores at the primary end point (8 weeks). All groups improved, with no mean treatment difference between groups: SSM+S vs SSM −0.5 (95% CI: −1.4, 0.4), P = 0.255; SSM+PS vs SSM −0.1 (95% CI: −1.0, 0.8), P = 0.829; and SSM+S vs SSM+PS −0.4 (95% CI: −1.4, 0.5), P = 0.378. The average 12-week costs were: SSM £586; SSM+S £738; and SSM+PS £685.

Conclusion There was no additional benefit of adding a thumb splint to a high-quality evidence-based, supported self-management programme for thumb OA delivered by therapists.

Trial registration ISRCTN 54744256 (http://www.isrctn.com/ISRCTN54744256).

Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.1093/rheumatology/keaa726

Authors


More by this author
Institution:
University of Oxford
Division:
MSD
Department:
NDORMS
Role:
Author
ORCID:
0000-0003-3464-3867
More by this author
Institution:
University of Oxford
Division:
MSD
Department:
NDORMS
Role:
Author
ORCID:
0000-0002-3452-3382


Publisher:
Oxford University Press
Journal:
Rheumatology More from this journal
Volume:
60
Issue:
6
Pages:
2862–2877
Publication date:
2020-11-30
Acceptance date:
2020-10-19
DOI:
EISSN:
1462-0332
ISSN:
1462-0324


Language:
English
Keywords:
Pubs id:
1140342
Local pid:
pubs:1140342
Deposit date:
2020-11-03

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