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KMID : 0361420120360050618
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Journal of Korean Academy of Rehabilitation Medicine
2012 Volume.36 No. 5 p.618 ~ p.626
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Computerized Posturographic Measurement in Elderly Women with Unilateral Knee Osteoarthritis
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Lim Kil-Byung
Lee Hong-Jae
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Abstract
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Objective: To identify the subtle change of postural control in elderly patients with unilateral knee osteoarthritis (OA) with computerized dynamic posturography.
Method: Twenty-two healthy women and twenty-six women with unilateral knee OA, aged 60 and over, were enrolled. The computerized posturographic measures included a weight bearing pattern during squatting and sit-to -stand, sway velocity of center of gravity (COG) during one leg standing, on-axis velocity and directional control of COG during rhythmic weight shift, rising index during sit-to-stand, end sway during tandem walk, and movement time during step up/over.
Results: It was shown that patients bore significantly less weight on the affected side during the 30o and 60o squat and sit-to-stand. Sway velocity of COG during one leg standing was greater whereas the on-axis velocity and directional control during the front/back rhythmic weight shift were significantly lower in the patient group. The rising index during sit-to-stand was significantly lower and movement time during step up/over with the affected side was significantly longer in patients.
Conclusion: This study demonstrated in detail a decline of postural balance by utilizing computerized posturography in elderly women with unilateral knee OA. They had less weight-bearing, more sway, and less ability of intentional postural control on the affected side.
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KEYWORD
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Balance, Posture, Osteoarthritis, Knee
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