Analysis of Femoral Leg Rotation Movement during Walking among Patients with Medial Knee Osteoarthritis

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  • 内側型変形性膝関節症における歩行時大腿・下腿回旋運動の解析

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The purpose of this study was to characterize rotation velocities of the pelvis, femur and leg in individuals with knee osteoarthritis (OA) and find the differences between these of asymptomatic persons during walking. <br>Five healthy young persons, 8 healthy elderly persons and 21 knee OA subjects (Grade II, 9; Grade III, 7; Grade IV, 5) were studied. <br>The magnitude and temporal characteristics of rotation velocity were significantly different between normal persons and knee OA subjects. Rotation of the pelvis was not different between the two groups. The knee OA decreased internal rotation velocity during loading response and external rotation during the midstance phase. Normal knees showed rotation movement of the leg during the early stance phase, however knees OA showed a decrease in rotation movement of the leg. <br>This study demonstrated differences in leg rotation velocity power spectra for participants with knee OA when compared with normal knees. In knee OA subjects, first peak frequency was shifted to a low frequency, and showed an inequitable spread. It means loss of rotation movement harmony. These findings indicate abnormal knee movement in knee OA. <br>The rotation velocity measurements used in this study may be useful in clinical practice.


  • Physical Therapy Japan

    Physical Therapy Japan 31 (7), 412-419, 2004-12-20

    Japanese Society of Physical Therapy

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