| Title | Temporal activity of vastus medialis obliquus and vastus lateralis in symptomatic knee osteoarthritis. | | Author(s) | Hinman RS, Bennell KL, Metcalf BR, Crossley KM | | Institution | Centre for Sports Medicine Research and Education, School of Physiotherapy, The University of Melbourne, Melbourne, Australia. | | Source | Am J Phys Med Rehabil 2002 Sep; 81(9):684-90. | | MeSH | Aged
Case-Control Studies
Cross-Sectional Studies
Electromyography
Exercise
Female
Humans
Male
Middle Aged
Muscle Contraction
Muscle, Skeletal
Osteoarthritis, Knee
Pain Measurement
Reaction Time
Research Support, Non-U.S. Gov't
Severity of Illness Index
| | Abstract | OBJECTIVE: Knee osteoarthritis has a major impact on quadriceps function, yet its effect on the specific temporal recruitment of vastus medialis obliquus and vastus lateralis is unknown. The aim of this study was to determine the electromyographic onset of vastus medialis obliquus activity relative to that of vastus lateralis in individuals with symptomatic knee osteoarthritis and in an asymptomatic control group during the functional task of stair climbing.
DESIGN: Cross-sectional, comprising 41 participants with symptomatic knee osteoarthritis and 33 controls matched for age, sex, and body mass.
RESULTS: No significant differences were detected in the timing of onset of vastus medialis obliquus relative to that of vastus lateralis between the osteoarthritis and control groups. Radiographic osteoarthritis severity, presence of patellofemoral joint disease, and pain intensity did not seem to influence the temporal relationship of the vastii in the osteoarthritis group.
CONCLUSION: The presence of symptomatic, radiographic knee osteoarthritis is not associated with deficits in the temporal recruitment of vastus medialis obliquus and vastus lateralis during stair climbing. This implies that selective retraining of the individual components of the quadriceps is not indicated in rehabilitation programs for patients with this disease. | | Language | eng | | Pub Type(s) | Journal Article
| | PubMed ID | 12172521 |
|
