Association of postural control with muscle strength, proprioception, self-reported knee instability and activity limitations in patients with knee osteoarthritis
Diana C. Sanchez-Ramirez, Marike van der Leeden, Dirk L. Knol, Martin van der Esch, Leo D. Roorda, Sabine Verschueren, Jaap van Dieën , Willem F. Lems, Joost Dekker
Amsterdam Rehabilitation Research Center Reade, 1040 HG Amsterdam, The Netherlands. E-mail: firstname.lastname@example.org
Objective: To determine the association of postural control with muscle strength, proprioception, self-reported knee instability and activity limitations in patients with knee osteoarthritis.
Methods: A total of 284 patients with knee osteoarthritis from the Amsterdam Osteoarthritis cohort were included. Postural control was assessed using the One-Leg Stand Test (OLST), in which the patients were asked to stand on one leg for 30 s. Muscle strength (isokinetic dynamometer), proprioception (joint motion detection threshold) and self-reported knee instability (episodes of buckling, shifting or giving way) were also assessed. Activity limitations were assessed using the Get Up and Go (GUG) test, the walking up-down stairs test, and Western Ontario and McMaster University Osteoarthritis Index – Physical Function subscale. Regression analyses were used to assess the associations.
Results: Muscle weakness (p = 0.02) and proprioceptive inaccuracy (p < 0.001) were associated with decreased postural control. Decreased postural control was associated with less time performing the GUG test (p < 0.001) and the walking up-down stairs test (p < 0.001). These associations were found after adjustment for relevant confounders.
Conclusion: In patients with knee osteoarthritis, decreased postural control is associated with muscle weakness, proprioceptive inaccuracy and performance-based activity limitations. These results highlight the importance of including assessment and training of postural control in this group of patients.
Do you want to comment on this paper? The comments will show up here and if appropriate the comments will also separately be forwarded to the authors.
You need to login/create an account to comment on articles. Click here to login/create an account