Title
Static and Dynamic Correlates of the Knee Adduction Moment in Healthy Knees Ranging from Normal to Varus-aligned
Document Type
Article
Publication Date
12-2009
Publication Source
Clinical Biomechanics
Abstract
Background: Individuals with medial knee osteoarthritis often present with varus knee alignment and ambulate with increased knee adduction moments. Understanding the factors that relate to the knee adduction moment in healthy individuals may provide insight into the development of this disease. Thus, this study aimed to examine the relationships of both static and dynamic lower extremity measures with the knee adduction moment. We hypothesized that the dynamic measures would be more closely related to this moment.
Methods: Arch height index, hip abduction strength and two static measures of knee alignment were recorded for 37 young asymptomatic knees that varied from normal to varus-aligned. Overground gait analyses were also performed. Correlation coefficients were used to assess the relationships between the static and dynamic variables to the knee adduction moment. Hierarchical regression analyses were then conducted using the static measures, the dynamic measures, and the static and dynamic measures together.
Results: Among the static measures, the tibial mechanical axis and the distance between the medial knee joint lines were correlated with the knee adduction moment. The best predictive static model (R2 = 0.53) included only the tibial mechanical axis. Among the dynamic variables, knee adduction and rearfoot eversion angles were correlated with the knee adduction moment. Knee adduction and rearfoot eversion, together, were the best dynamic model (R2 = 0.53). The static and dynamic measures together created the strongest of the three models (R2 = 0.59).
Conclusions: These results suggest that dynamic measures slightly enhance the predictive strength of static measures when explaining variation in the knee adduction moment.
Inclusive pages
850–854
ISBN/ISSN
0268-0033
Copyright
Copyright © 2009, Elsevier
Publisher
Elsevier
Volume
24
Issue
10
Peer Reviewed
yes
eCommons Citation
Barrios, Joaquin Alberto; Higginson, Jill S.; Royer, Todd D.; and Davis, Irene S., "Static and Dynamic Correlates of the Knee Adduction Moment in Healthy Knees Ranging from Normal to Varus-aligned" (2009). Physical Therapy Faculty Publications. 64.
https://ecommons.udayton.edu/dpt_fac_pub/64
COinS
Comments
Permission documentation on file.