Prescribed Knee Brace Treatments for Osteoarthritis of the Knee (Knee OA)

Study Overview
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Brief Summary
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The study is a non-controlled retro- and prospective multi center patient registry study. Subjects will be given a study ID number assigned at first brace fitting after consenting to partake. Participants will be asked to fill in a questionnaire either in electronic or paper version at first fitting. Additional follow up questionnaires will be implemented at 4 weeks, 6 months and 1 year post initial brace fitting. After that period patients will be contacted every year, until brace termination/ knee surgery or death.

Detailed Description
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This is a noninterventional registry study pertaining to knee OA braces. There are no comparative devices or treatments. Subjects are expected to follow the recommendations of the brace subscriber and other health care professionals at any time independent of their continuation within the registry. Subjects will be enrolled at the clinic where their brace was prescribed or at the site where the brace was fitted. There is no formal end date for this data registry. A revisit to this protocol may be motivated after 5 years, to assess if longer follow up is required. For individual participants follow up will continue with annual questionnaires as long as the brace is in use. The questionnaires will be administered either through mail with a paper version, or through a link to an electronical version (ePRO). There is also a possibility of administrating the questionnaires as a phone guided interview, if that is a mean that serves the patient or clinics better. The planned follow-ups are at 4 weeks, 6 months, 1 year from brace prescription and then annually as long as participants are disposed as ongoing in the registry. The questionnaires contains question about pain, function, medication, general brace use and quality of life question.

Official Title
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Behandlingseffekter Med Avlastande knäortoser för Patienter Med knäartros En Retro-och Prospektiv Multicenterregisterstudie

Conditions
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Knee Osteoarthritis

Intervention / Treatment
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* Other: This is a non interventional registry


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients that are prescribed knee brace for symptomatic treatment of knee OA from partaking clinics Older than 18 years Exclusion Criteria: Younger than 18 years Not willing or able to sign informed consent, or not cognitive impairments preventing understanding of the questionnaires.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Other: This is a non interventional registry|All patients, at listed investigational sites, that get prescription for a knee orthosis indicated for Knee OA symptomatic treatment, get an invite to partake in the evaluation registry.|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Proportion of patients that are using the braces | brace usage, days per week | 6 months follow up | 
| Change in Pain status compared to baseline | Knee injury and Osteoarthritis Outcome Score (KOOS)-12 | 6 months follow up | 
| Change in Mobility compared to baseline | KOOS-12 | 6 months follow up | 
| Proportion of patients that are still using the braces | brace usage, days per week | 1 year follow up | 
| Change in Pain status compared to baseline | KOOS-12 | 1 year follow up | 
| Change in Mobility compared to baseline | KOOS-12 | 1 year follow up | 
| Sick leave after receiving the braces | Proportion of sick leave | 6 months follow up | 
| Sick leave after receiving the braces | Proportion of sick leave | 1 year follow up | 
| Changes in reported quality of life | KOOS-12 | 6 months follow up | 
| Changes in reported quality of life | KOOS-12 | 1 year follow up | 
| Changes in QALY's | EQ-5D-5L | 6 months follow up | 
| Changes in QALY's | EQ-5D-5L | 1 year follow up | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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knee brace, conservative treatment