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To investigate the effects of quadriceps strengthening on the adductor moment in individuals with medial knee OA and whether quadriceps strengthening has a different effect on the adductor moment in individuals with and without knee malalignment
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Although quadriceps strengthening is the cornerstone of physiotherapy management, recent evidence suggests that high quadriceps strength in patients with malaligned knees may increase OA progression.
This study investigates the effects of quadriceps strengthening on the adduction moment in patients with medial knee OA with and without malalignment. 107 participants with and without varus knee malalignment were recruited and randomised into an exercise or a control group. Participants in the exercise group were taught five quadriceps strengthening exercises by a project physiotherapist to be performed five days a week for twelve weeks at home. The exercises were:
Each exercise was performed at 2x10 repetitions for the first 2 weeks and 3x10 repetitions thereafter.
Participants visited the physiotherapist 7 times at Week 1, 2, 3, 4, 5, 7 and 10. They were given the ankle weights and elastic band to bring home and instructed about the repetitions and weights to use by the physiotherapist, who also checked and progressed their exercises. The average duration of the physiotherapy sessions was 30 minutes. To monitor compliance, each participant was given an exercise instructions sheet and kept a training diary to record the exercises they had done.
The control group received no intervention.
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Data sourced from clinicaltrials.gov
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