Identification and classification of toe-walkers based on ankle kinematics, using a data-mining method

A database of 1736 patients and 2511 gait analyses was reviewed to identify for trials where the first rocker was absent. A fuzzy c-means algorithm was used to identify sagittal ankle kinematic patterns and three groups were identified. The first showed a progressive dorsiflexion during the stance p...

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Bibliographic Details
Published in:Gait & posture Vol. 23; no. 2; pp. 240 - 248
Main Authors: Armand, Stéphane, Watelain, Eric, Mercier, Moïse, Lensel, Ghislaine, Lepoutre, François-Xavier
Format: Journal Article
Language:English
Published: England Elsevier B.V 01.02.2006
Elsevier
Subjects:
Adolescent
Algorithms
Biomechanical Phenomena
Biomechanics
Data-mining
Databases as Topic
Electromyography
Female
Fuzzy c-means
Fuzzy Logic
Gait analysis
Gait Disorders, Neurologic - physiopathology
Humans
Life Sciences
Lower Extremity - physiopathology
Male
Toe-walking
Toes
Walking - physiology
Biomechanics
Data-mining
Toe-walking
Gait analysis
Fuzzy c-means
ISSN:0966-6362, 1879-2219
Online Access:Get full text
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Summary:A database of 1736 patients and 2511 gait analyses was reviewed to identify for trials where the first rocker was absent. A fuzzy c-means algorithm was used to identify sagittal ankle kinematic patterns and three groups were identified. The first showed a progressive dorsiflexion during the stance phase, while the second had a short-lived dorsiflexion, followed by a progressive plantarflexion. The third group exhibited a double bump pattern, moving successively from a short-lived dorsiflexion to a short-lived plantarflexion and then returning to a further short-lived dorsiflexion before ending with plantarflexion until toe-off. The three patterns were linked to different neurological conditions. Myopathy, neuropathy and arthogryposis essentially revealed group 1 patterns, whereas idiopathic toe-walkers mainly displayed group 2 patterns. Cerebral palsy patients, however, were relatively homogeneously distributed amongst the three groups. Able-bodied subjects walking on their toes showed a high proportion of unclassifiable ankle patterns, due to a variable gait whilst toe walking. Despite the variety of neurological conditions included in this meta-analysis repeatable biomechanical patterns appeared that could influence therapeutic management.
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ISSN:0966-6362
1879-2219
DOI:10.1016/j.gaitpost.2005.02.007