ArticleTurkish journal of physical medicine and rehabilitation2025
Comparison of open and closed kinetic chain exercises on vastus medialis and vastus medialis oblique in patellofemoral pain syndrome: A randomized, single-blinded, prospective study.
Article in Turkish journal of physical medicine and rehabilitation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objectives: The aim of this study was to compare the effect of open and closed kinetic chain exercises on pain, thickness of vastus medialis (VM) and vastus medialis oblique (VMO) muscle, and VMO architecture. Patients and methods: The randomized single-blind prospective was conducted between January 2022 and September 2023. Thirty patients (11 males, 19 females; mean age: 37.5±8.8 years; range, 18 to 50 years) with patellofemoral pain syndrome (PFPS) were randomized into two groups. Fifteen patients in the first group (23 knees) received open kinetic chain exercises, and 15 patients in the second group (22 knees) received closed kinetic chain exercises (CKCE) as a six-week home exercise program. The following variables were measured before and after the exercise program: Visual Analog Scale , Q angle, and ultrasonographic measurements. In ultrasonographic measurements, the thickness of the VM and VMO muscles and the VMO fiber angle was evaluated. Results: Both groups showed statistically highly significant improvement in all evaluation parameters in inter- and intragroup comparisons (p<0.001). Before treatment, there was no statistical difference in Visual Analog Scale scores between the two groups. However, a significant decrease was observed in favor of the CKCE group after treatment (p=0.037). There was no statistically significant difference between the groups in terms of VMO, VM muscle thickness, and fiber angle changes (p=0.26, p=0.28, and p=0.28, respectively). Conclusion: The thickness of the VM and VMO muscles, the angle of the VMO fibers, and the pain scores improved both exercise groups in patients with PFPS. However, CKCE proved to be superior for pain reduction. Both open and closed kinetic chain exercises can be beneficial for PFPS management, with CKCE potentially being more appropriate for patients with prominent pain.
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