Abstract
Background and Objectives: One of the predisposing factors for postural sway changes in patients with knee osteoarthritis is the severity of knee pain. Therefore, the purpose of this study was to evaluate the relationship between pain severity and static and dynamic balance indices in patients with knee osteoarthritis.Materials and Methods: 15 patients with knee osteoarthritis were selected through simple non-probability sampling. Static and dynamic balance indices were also measured by Biodex system, the pain severity by the Visual Analogue Scale (VAS) in two pre and post time intervals. The treatment was performed for the balance trainings group for 3 weeks and 5 times per week. Paired statistical t-test and Pearson test were used to analyze the data.Results: The results showed that balance trainings resulted in significant improvement in pain severity and dynamic and static balance indices. There was a significant direct correlation between pain severity and anterior-posterior stability index and medial-lateral stability index on two feet with the closed eyes with exercise, respectively (rho = 0.52, p = 0.04) and (rho = 0.53, p = 0.03). There was also a significant indirect correlation between pain severity and anterior-posterior stability index on the affected leg with the closed eyes (rho = 0.60, p = 0.01).Conclusion: The results of the study confirm the direct and indirect relationship between dynamic balance indices and pain intensity; in the future studies the effect of pain on neuromuscular factors should be considered.
Highlights
Osteoarthritis is the most common articular disease in the world and is considered as a major factor of disability(Moskowitz, 1992; Shakoor, Furmanov, Nelson, Li, & Block, 2008)
The results showed that balance trainings resulted in significant improvement in pain severity and dynamic and static balance indices
Mean and standard deviation of pain severity and data related to overall, anterior-posterior and lateral stability indices in standing on two legs and affected leg in static and dynamic position with open and closed eyes and comparing the results of post-treatment with pre-treatment and value P related to the comparison of the results of post-treatment with pre-treatment and the relationship between these balance indices and the severity of pain and the value P related to them have been given in Tables 2 and 3
Summary
Osteoarthritis is the most common articular disease in the world and is considered as a major factor of disability(Moskowitz, 1992; Shakoor, Furmanov, Nelson, Li, & Block, 2008). Knee osteoarthritis has been known as one of the most important causes of pain, disability and reduced balance and low quality of life (Masui et al, 2006). It causes many social, economic, and psychological problems to a person (Lyytinen et al, 2010). In patients with knee osteoarthritis, the knee pain is a major pathologic difficult that may reduce muscle strength (Kim, Lee, & Lim, 2016). One of the predisposing factors for postural sway changes in patients with knee osteoarthritis is the severity of knee pain. The purpose of this study was to evaluate the relationship between pain severity and static and dynamic balance indices in patients with knee osteoarthritis
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