Gait analysis following varus osteotomy of the femur for hip osteoarthritis

Hidetoshi Watanabe, Yoichi Shimada, Hitoshi Kagaya, Kozo Sato

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The purpose of this study was to evaluate differences in the, gait patterns of healthy and osteoarthritic hips, and changes in these patterns after intertrochanteric varus osteotomy of the femur, in relation to the strength of the muscles around the hip joint. We measured the strength ratio of hip abductor muscles, temporal and distance factors, and pelvic movement, and carried out dynamic electromyography (EMG) in 24 women who underwent unilateral varus osteotomy of the femur for hip osteoarthritis (OA), 30 non- surgically-treated women with hip OA, and 54 healthy women. The stance phase time was shorter and the strength ratio of hip abductor muscles was lower in the operated patients than these values in the other two groups, changes in pelvic obliquity and tilt were smaller, and changes in the percent maximum voluntary contraction of the gluteus medius and tensor fascia latae muscles were greater than these values in the healthy subjects. This study showed the postoperative reappearance of the simulated conditions in the hip before varus osteotomy of the femur, providing evidence that the pelvis was horizontally maintained during walking due to the decreased stance phase time and increased performance of the hip abductor muscles achieved after this procedure.

Original languageEnglish
Pages (from-to)89-98
Number of pages10
JournalJournal of Orthopaedic Science
Volume4
Issue number2
DOIs
Publication statusPublished - 01-01-1999

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Hip Osteoarthritis
Osteotomy
Gait
Femur
Hip
Muscles
Fascia Lata
Hip Joint
Muscle Strength
Electromyography
Pelvis
Walking
Healthy Volunteers

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine

Cite this

Watanabe, Hidetoshi ; Shimada, Yoichi ; Kagaya, Hitoshi ; Sato, Kozo. / Gait analysis following varus osteotomy of the femur for hip osteoarthritis. In: Journal of Orthopaedic Science. 1999 ; Vol. 4, No. 2. pp. 89-98.
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Gait analysis following varus osteotomy of the femur for hip osteoarthritis. / Watanabe, Hidetoshi; Shimada, Yoichi; Kagaya, Hitoshi; Sato, Kozo.

In: Journal of Orthopaedic Science, Vol. 4, No. 2, 01.01.1999, p. 89-98.

Research output: Contribution to journalArticle

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