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KMID : 0361420110350050701
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Journal of Korean Academy of Rehabilitation Medicine
2011 Volume.35 No. 5 p.701 ~ p.709
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Balance Control and Knee Osteoarthritis Severity
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Kim Hee-Sang
Yun Dong-Hwan
Yoo Seung-Don
Kim Dong-Hwan
Jeong Yong-Seol
Yun Jee-Sang
Hwang Dae-Gyu
Jung Pil-Kyo
Choi Seong-He
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Abstract
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Objective: To investigate balance control according to the severity of knee osteoarthritis (OA) using clinical tests and Tetra-ataxiometric posturography (Tetrax®).
Method: A total 80 patients with primary knee OA classified according to American College of Rheumatology criteria, and 40 age-matched controls were enrolled in this study. Of those with OA, 39 patients had mild OA (Kellgren-Lawrence [KL] grade 1, 2) and the other 41 had moderate to severe OA (KL grade 3, 4). The postural control capabilities of the subjects were assessed using the timed up and go test (TUG), Berg balance scale (BBS), and Tetrax®, which utilizes two paired force plates to measure vertical pressure fl uctuations over both heels and forefeet. Th e subjects were checked for their stability index (ST), Fourier index, weight distribution index (WDI), and synchronization index (SI) in eight positions using Tetrax®.
Results: Patients with moderate to severe OA exhibited signifi cantly higher stability indices in all positions than patients with mild OA. Th e Fourier index was also higher in patients with moderate to severe OA than in patients with mild OA. However, the weight distribution index and synchronization of both heels and forefeet were not signifi cantly diff erent in the three groups.
Conclusion: These findings suggest that patients with moderate to severe OA have more defi cits in balance control than those with mild disease. Th erefore, evaluation of balance control and education aimed at preventing falls would be useful to patients with knee OA.
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KEYWORD
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Knee osteoarthritis, Balance control, Posturography, Fall
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