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  [in Japanese] Analysis of Femoral Leg Rotation Movement during Walking among Patients with Medial Knee Osteoarthritis  [in Japanese]

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Abstract

本研究では,角速度センサを用いて歩行時の骨盤,大腿,下腿の回旋運動の計測を行い,変形性膝関節症患者で得られた角速度波形より健常例とは異なる特徴を同定し,その特徴を明らかにすることを目的とする。対象は健常若年群5名,健常高齢者群8名,変形性膝関節症群21名である。結果は変形性膝関節症群では健常群と異なる角速度波形が確認できた。骨盤の回旋運動には大きな相違は見られなかった。大腿は,荷重反応期での内旋,立脚中期の外旋運動の減少が見られた。下腿では,健常者は歩行時,立脚初期には下肢回旋運動は複雑な運動が行われており,変形性膝関節症群では下腿回旋運動の減少がみられた。また周波数解析では変形性膝関節症群は健常者群と比較し,第1ピーク周波数が低周波域に移動しており,さらに,スペクトルの広がりの不均一性が認められ,下腿回旋運動の調和性が失われていると推測した。本研究で用いた角速度センサによる下肢肢節回旋測定は,臨床においての理学療法効果判定に有用である可能性が示された。

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.

Journal

  • Physical Therapy Japan

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

    Japanese Society of Physical Therapy

References:  17

Cited by:  3

Codes

  • NII Article ID (NAID)
    110004013350
  • NII NACSIS-CAT ID (NCID)
    AN10146032
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0289-3770
  • Data Source
    CJP  CJPref  NII-ELS  J-STAGE 
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