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Knee osteoarthritis (KOA) is the leading and fastest increasing cause of disability in older adults. It is a serious health issue related with a high health care utilisation. The first-line KOA management is nonsurgical care, with education and exercise therapy as key elements. Nevertheless, treatment effects of exercise therapy and behavioral pain management on improvements in pain, function and quality of life are small to moderate at best. This shows that there is an urgent need for better KOA care. The innovative solution may lie in thinking beyond joints, by targeting KOA subgroups through comorbidity-specific interventions, which fits well in the global move towards precision medicine. With a prevalence rate up to 50%, the presence of insomnia symptoms is a highly prevalent KOA comorbidity, contributing to symptom severity. If left untreated, it represents a barrier for effective conservative management. Since insomnia is nowadays hardly addressed in the often joint-targeted KOA care, the scientific objectives of the study are to assess 1) if cognitive behavioral therapy for insomnia (CBT-I) integrated in best-evidence usual care, consisting of education and exercise therapy, (CBTi-UC) is more effective than best-evidence usual care alone (UC), i.e. education and exercise therapy, at 6 months follow-up in improving clinical outcomes and 2) if CBTi-UC is more cost-effective than UC in KOA patients with comorbid insomnia.
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Inclusion criteria
45 years old or older
Being a fluent Dutch speaker
Commits to study requirements
Knee Osteoarthritis classified using the American college of Rheumatology criteria (Knee pain + 3/6 for diagnosis):
Insomnia diagnosis using the DSM-5 criteria:
Knee pain nominated by the patient as 3 or higher on a visual analogue scale on most days of the last 3 months
Informed consent
Exclusion criteria
Treatment with supervised exercise therapy or joint infiltrations (e.g., corticosteroids, hyaluronic acid) or CBT-I in the preceding six months
Change in any psychiatric or psychological treatment the last 3m or planned during the study period
Concurrent intense psychological treatment (weekly basis)
BMI >30
Mini-Mental state examination score of 23 or lower
Being on the waiting list for a knee replacement or having received knee replacement on symptomatic side
Any contra-indication for exercise therapy
Existing diagnose that has impact on sleep and patients are therefore unlikely to respond to CBT-I: any rheumatological condition (e.g. rheumatoid arthritis, Lupus, Sjogren's syndrome); any neurological conditions (e.g. stroke, Multiple sclerosis, Parkinson's disease), dementia or receiving cholinesterase inhibitors; cancer diagnosis in the past year and receiving chemotherapy or radiation therapy in the past year; Long-COVID or inpatient treatment for congestive heart failure within the prior six months.
Having severe underlying sleep disorder (obstructive sleep apnea over AHI >15, periodic leg movement disorder, restless leg syndrome, sleep-wake cycle disturbance, rapid eye movement behavior disorder)
Being pregnant or given birth in the preceding year
Having an external/ physical factor that limits the opportunity to sleep (E.g. newborn)
Primary purpose
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Interventional model
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128 participants in 2 patient groups
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Central trial contact
Liesbet De Baets, PhD
Data sourced from clinicaltrials.gov
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