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Updated: Jun 9, 2026
Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
Published on: December 11, 2013
Changes in postural control strategy during quiet standing in individuals with knee osteoarthritis
Kento Sabashi1,2, Satoshi Kasahara1, Harukazu Tohyama1
1Faculty of Health Sciences, Hokkaido University, Sapporo, Hokkaido, Japan.
Background:
Knee osteoarthritis (OA) impairs postural control and may affect how the lower limb joints are used for postural control.
Objective:
To investigate how individuals with knee OA use lower limb joints for static postural control.
Methods:
Ten patients with knee OA and thirteen healthy controls performed quiet standing for 30 s. The standard deviation of the center of mass (COM) and lower limb joint motions in the anterior-posterior (AP) and medial-lateral (ML) planes were calculated from three-dimensional marker trajectories. Pearson's correlation analysis and independent t-tests were conducted to investigate the relationship between COM and lower limb joint motion and to compare group difference, respectively.
Results:
The AP hip angular velocity alone in the knee OA group and the AP hip and knee angular velocity in the control group were significantly correlated with the AP COM velocity. The ML hip angular velocity was significantly correlated with the ML COM velocity in both groups. The knee OA group exhibited a significantly larger standard deviation of AP COM velocity than the control group.
Conclusions:
Individuals with knee OA depended solely on the contribution of the hip to the AP COM velocity, which could not be successfully controlled by the knee.
