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Altered Gait Characteristics in Individuals With Knee Osteoarthritis and Self-Reported Knee Instability.
- Source :
- Journal of Orthopaedic & Sports Physical Therapy; May2015, Vol. 45 Issue 5, p351-359, 9p
- Publication Year :
- 2015
-
Abstract
- * STUDY DESIGN: Experimental laboratory study, * OBJECTIVE: To characterize the differences in lower extremity gait biomechanics in individuals who have knee osteoarthritis (OA) with and without self-reported knee instability. * BACKGROUND: Individuals with knee OA who experience episodes of knee instability often report gait difficulties that interfere with their daily lives. A better understanding of the alterations in gait biomechanics may help to mitigate symptomatic knee instability in this patient population. * METHODS: Seventeen participants with knee OA and self-reported knee instability and 36 participants with knee OA and no self-reported knee instability underwent instrumented gait analysis on level ground. Knee-specific symptoms and functional limitations were assessed using the Western Ontario and McMaster Universities Osteoarthritis Index. * RESULTS: Knee instability was associated with greater odds of reporting moderate to severe gait-related pain (odds ratio = 6.0; 95% confidence interval: 1.2, 28.9) and moderate to severe difficulty when walking on flat surfaces (odds ratio = 10.7; 95% confidence interval: 1.7, 69.2). During early stance, the group with self-reported knee instability walked with a greater knee flexion excursion (P = .02) and a smaller lower extremity support moment (P<.01), due to reduced contributions from the hip extensors (P<.01) and ankle plantar flexors (P = .04). The group with self-reported knee instability also walked with a greater knee extensor contribution to the lower extremity support moment (P = .04) during the initial knee extension phase of gait compared to their counterparts with good knee stability. * CONCLUSION: These findings suggest that self-reported knee instability is associated with significant alterations in hip, knee, and ankle joint function during the stance phase of gait in individuals with knee OA. [ABSTRACT FROM AUTHOR]
- Subjects :
- KNEE disease treatment
KNEE physiology
KNEE radiography
LEG physiology
OSTEOARTHRITIS treatment
TORQUE
ANKLE physiology
HIP joint physiology
ANALYSIS of covariance
ANKLE
ANTHROPOMETRY
BIOMECHANICS
BIOPHYSICS
CHI-squared test
CLINICAL trials
COMPARATIVE studies
CONFIDENCE intervals
DIAGNOSIS
DYNAMICS
EXERCISE tests
EXERCISE therapy
EXPERIMENTAL design
GAIT in humans
GROUND reaction forces (Biomechanics)
JOINT hypermobility
RANGE of motion of joints
KINEMATICS
KNEE diseases
MULTIVARIATE analysis
MUSCLE contraction
MUSCLE strength testing
OSTEOARTHRITIS
PROBABILITY theory
RESEARCH evaluation
RESEARCH funding
STATISTICAL sampling
SCIENTIFIC apparatus & instruments
SELF-evaluation
STATISTICS
T-test (Statistics)
WALKING
LOGISTIC regression analysis
STATISTICAL reliability
PAIN measurement
BODY mass index
RANDOMIZED controlled trials
INTER-observer reliability
MOTION capture (Human mechanics)
DATA analysis software
KNEE pain
FUNCTIONAL assessment
DESCRIPTIVE statistics
ODDS ratio
Subjects
Details
- Language :
- English
- ISSN :
- 01906011
- Volume :
- 45
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Journal of Orthopaedic & Sports Physical Therapy
- Publication Type :
- Academic Journal
- Accession number :
- 103170536
- Full Text :
- https://doi.org/10.2519/jospt.2015.5540