Digital education and exercise therapy versus minimal intervention for young people at high risk of early onset knee osteoarthritis after ACL reconstruction: a study protocol for the Stop OsteoARthritis (SOAR) randomized controlled trial
Abstract Background People who tear their anterior cruciate ligament and have reconstruction surgery (ACLR) are at elevated risk of inactivity, obesity, and early-onset knee osteoarthritis. Consensus recommendations to prevent post-traumatic knee osteoarthritis include person-centered education and...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2025-06-01
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| Series: | Trials |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13063-025-08896-6 |
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| Summary: | Abstract Background People who tear their anterior cruciate ligament and have reconstruction surgery (ACLR) are at elevated risk of inactivity, obesity, and early-onset knee osteoarthritis. Consensus recommendations to prevent post-traumatic knee osteoarthritis include person-centered education and exercise-based treatments. The effectiveness of these recommendations is unknown. This study will assess if a digital education and exercise therapy intervention is superior to minimal intervention for improving knee-related symptoms, function, and quality of life in young people after ACLR. Methods The Stop OsteoARthritis (SOAR) study is a parallel, two-arm, assessor-blinded, superiority, hybrid effectiveness-implementation type 1 randomized controlled trial. After baseline testing, 166 participants aged 16–35 years, 9–36 months past, a first-time ACLR with ongoing symptoms will be randomly allocated to one of two treatment groups (1:1 ratio, stratified by sex). Ongoing symptoms will be defined as not meeting a Patient Acceptable Symptom State (PASS) on the averaged Knee injury and Osteoarthritis Outcome Score pain, symptoms function in sport and recreation, and quality-of-life subscales (KOOS4 < 79). Participants randomized to the experimental intervention will receive a digital (remote videoconferencing) 6-month program of group-based learning, individualized weekly home-based exercise therapy and physical activity program with tracking, and 1:1 physiotherapist-guided counseling. Participants randomized to the minimal intervention control group will receive an educational recording, best-practice guide for ACLR rehabilitation, one videoconferencing session, and tracking. The primary effectiveness outcome is the between-group difference in KOOS4 change from baseline to 6-months, with secondary endpoints at 12- and 24months. Secondary effectiveness outcomes include differences in the change of individual KOOS subscale scores, proportions of participants achieving KOOS subscale PASS scores, perceived self-management, and MRI features of knee OA. We will also assess secondary implementation (perceived barriers and facilitators of SOAR delivery), secondary efficiency (incremental cost-utility ratio), and exploratory outcomes. Missing data will be imputed and blinded intention-to-treat analyses performed. Discussion By assessing the effect, implementation, and efficiency of a digital education and exercise-based intervention designed to improve the knee health of young people at increased risk of knee osteoarthritis, this study will provide a basis for future scale-up to help curb the mounting burden of osteoarthritis. Trial registration ClinicalTrials.gov NCT06195423. Registered on December 22, 2023. |
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| ISSN: | 1745-6215 |