Estimation of ankle joint parameters in typically developed adults using functional calibration methods |
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| Affiliation: | 1. Universitätsklinikum Heidelberg, Centre of Orthopedics and Trauma Surgery, Heidelberg, Germany;2. Universitätsklinikum Heidelberg, Institute of Physiology and Pathophysiology, Heidelberg, Germany;3. University Children''s Hospital Zurich, Department of Pediatric Orthopedics, Zurich, Switzerland;1. Health and Rehabilitation Sciences Doctoral Program, School of Health and Rehabilitation Sciences, The Ohio State University, 453 W 10th Avenue, Suite 228, Columbus, OH 43210, United States;2. Division of Physical Therapy, School of Health and Rehabilitation Sciences, The Ohio State University, 453 W 10th Avenue, Suite 516, Columbus, OH 43210, United States;3. Sports Medicine Research Institute, The Ohio State University Wexner Medical Center, 2835 Fred Taylor Drive, Suite 3200, Columbus, OH 43202, United States;4. College of Medicine, The Ohio State University, 370 W 9th Avenue, Columbus, OH 43210, United States;5. Center for Clinical and Translational Science, The Ohio State University, 376 W 10th Avenue, Suite 260, Columbus, OH 43210, United States;6. Division of Endocrinology, Diabetes and Metabolism, The Ohio State University Wexner Medical Center, McCampbell Hall, 5th Floor, 1581 Dodd Drive, Columbus, OH 43210, United States;7. Orthopaedics Biomechanics Laboratories and Sports Medicine Research Center, Mayo Clinic, Guggenheim Building 1-21, 200 First St. SW, Rochester, MN 55905, United States;8. Department of Orthopaedics, The Ohio State University, 725 Prior Hall, 376 W 10th Avenue, Columbus, OH 43210, United States;9. Department of Radiology, The Ohio State University Wexner Medical Center, 395 W 12thAvenue, Columbus, OH 43210, United States;1. Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, Melbourne, The University of Melbourne, VIC, 3010, Australia;2. Department of Physiotherapy, Monash University, Frankston, VIC, Australia;3. Department of Physical Therapy, Des Moines University, Des Moines, IA, USA;4. Department of Kinesiology, Iowa State University, Ames, IA, USA;1. Faculty of Sport and Physical Education, University of Belgrade, Serbia;2. Faculty of Sport, University of Ljubljana, Slovenia;1. Faculty of Physical Education, University of Brasilia, Brazil;2. Neuroscience Research Australia, University of New South Wales, Australia;3. Institute for Musculoskeletal Health, The University of Sydney, Australia;1. Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan;2. Department of Medical Research, E-Da Hospital, Kaohsiung, Taiwan;3. Musculoskeletal Research Center, National Cheng Kung University, Tainan, Taiwan;4. Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan;5. Department of Occupational Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan;6. Institute of Allied Health Sciences, National Cheng Kung University, Tainan, Taiwan;7. Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan |
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| Abstract: | BackgroundDespite 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 questionThe aim of this study was to estimate the ankle joint parameters using a functional approach.MethodsTo 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.ResultsThe 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.ConclusionThese 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. |
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| Keywords: | Ankle joint parameters Functional methods Functional calibration |
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