1. Estimation of ankle joint parameters in typically developed adults using functional calibration methods.
- Author
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Salami, Firooz, Wolf, Sebastian I., Simon, Jan, Leboucher, Julien, Heitzmann, Daniel W.W., Dreher, Thomas, and Götze, Marco
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ANKLE , *CALIBRATION , *GAIT in humans , *FOOT abnormalities , *HIP joint , *ANKLE physiology , *RESEARCH , *RESEARCH methodology , *EVALUATION research , *MEDICAL cooperation , *COMPARATIVE studies , *KINEMATICS - Abstract
Background: Despite of many attempts to determine or correct hip and knee joint parameters via non-invasive techniques such as regression or functional methods, in conventional gait models the position of the ankle joint center still is assumed at the center point between malleoli.Research Question: The aim of this study was to estimate the ankle joint parameters using a functional approach.Methods: To this aim, we used data of 23 typically developed adults performing two different calibration motions. Subsequently, we applied functional approaches to determine the functional joint center and axis.Results: The results show significant differences for ankle joint parameters in all directions for both calibration motions applied with respect to the malleoli line. Most prominently, we find a shift of the ankle joint center of 7 % of the foot length anteriorly to the malleoli mid-point when applying functional calibration.Conclusion: These significant alterations of the ankle joint center and axis indicate the importance of accurate determination of ankle joint parameters and consequently their influence on the clinical outcome. [ABSTRACT FROM AUTHOR]- Published
- 2020
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