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Arthritis Care Res (Hoboken). 2016 May;68(5):590-602. doi: 10.1002/acr.22744.

Physical Therapist-Delivered Pain Coping Skills Training and Exercise for Knee Osteoarthritis: Randomized Controlled Trial.

Author information

1
University of Melbourne, Melbourne, Victoria, Australia.
2
University of Queensland, Brisbane, Queensland, Australia.
3
University of Melbourne and Royal Women's Hospital, Melbourne, Victoria, Australia.
4
University of British Columbia, Vancouver, British Columbia, Canada.
5
Monash University, Melbourne, Victoria, Australia.
6
University of Sydney, Sydney, New South Wales, Australia.
7
Duke University, Durham, North Carolina.

Abstract

OBJECTIVE:

To investigate whether a 12-week physical therapist-delivered combined pain coping skills training (PCST) and exercise (PCST/exercise) is more efficacious and cost effective than either treatment alone for knee osteoarthritis (OA).

METHODS:

This was an assessor-blinded, 3-arm randomized controlled trial in 222 people (73 PCST/exercise, 75 exercise, and 74 PCST) ages ≥50 years with knee OA. All participants received 10 treatments over 12 weeks plus a home program. PCST covered pain education and training in cognitive and behavioral pain coping skills, exercise comprised strengthening exercises, and PCST/exercise integrated both. Primary outcomes were self-reported average knee pain (visual analog scale, range 0-100 mm) and physical function (Western Ontario and McMaster Universities Osteoarthritis Index, range 0-68) at week 12. Secondary outcomes included other pain measures, global change, physical performance, psychological health, physical activity, quality of life, and cost effectiveness. Analyses were by intent-to-treat methodology with multiple imputation for missing data.

RESULTS:

A total of 201 participants (91%), 181 participants (82%), and 186 participants (84%) completed week 12, 32, and 52 measurements, respectively. At week 12, there were no significant between-group differences for reductions in pain comparing PCST/exercise versus exercise (mean difference 5.8 mm [95% confidence interval (95% CI) -1.4, 13.0]) and PCST/exercise versus PCST (6.7 mm [95% CI -0.6, 14.1]). Significantly greater improvements in function were found for PCST/exercise versus exercise (3.7 units [95% CI 0.4, 7.0]) and PCST/exercise versus PCST (7.9 units [95% CI 4.7, 11.2]). These differences persisted at weeks 32 (both) and 52 (PCST). Benefits favoring PCST/exercise were seen on several secondary outcomes. Cost effectiveness of PCST/exercise was not demonstrated.

CONCLUSION:

This model of care could improve access to psychological treatment and augment patient outcomes from exercise in knee OA, although it did not appear to be cost effective.

PMID:
26417720
DOI:
10.1002/acr.22744
[Indexed for MEDLINE]
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