THE ASSOCIATIONS BETWEEN KNEE FLEXION, VERTICAL CENTER-OF-MASS EXCURSIONS AND LOWER-EXTREMITY MUSCLE WORK FOR END-STAGE KNEE OSTEOARTHRITIS
| Autor: | Li-Shan Chou, David Mandeville, Louis R. Osternig |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty business.industry education Excursion Knee flexion Total knee replacement Osteoarthritis musculoskeletal system medicine.disease Positive correlation Muscle work Gait Physical medicine and rehabilitation Gait analysis Medicine Orthopedics and Sports Medicine business human activities |
| Zdroj: | Journal of Musculoskeletal Research. 12:77-84 |
| ISSN: | 1793-6497 0218-9577 |
| DOI: | 10.1142/s0218957709002213 |
| Popis: | Purpose: The purpose of this study was to assess the association of the knee flexion excursion to the vertical center-of-mass (COM) amplitude and to the lower-extremity muscle work during stance phase for subjects with knee osteoarthritis. Method: Twenty subjects scheduled for total knee replacement and 20 controls performed level walking during standard gait analysis. Dependent variables included stance-phase knee flexion excursion, vertical COM amplitude, and lower-extremity muscle work. Results: Compared to healthy control, subjects with knee osteoarthritis walked with significantly less stance-phase knee flexion and vertical COM excursion. Knee flexion excursion was found to have a strong positive correlation to vertical COM amplitude. The lower-extremity muscle work during single stance phase was found to have a moderate negative correlation to vertical COM amplitude. Conclusions: Osteoarthritis of the knee alters both the stance-phase knee flexion and vertical COM excursions. As these variables show a strong positive relation, efforts to restore stance-phase knee flexion based on the 3rd determinant of gait require a new justification. |
| Databáze: | OpenAIRE |
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