3782
2007
2007
eng
628
634
7
36
article
0
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Muskuloskelettale Biomechanik des Kniegelenks - Grundlagen für die präoperative Planung von Umstellung und Gelenkersatz
Der Orthopäde
10.1007/s00132-007-1115-2
Markus O. Heller
Georg Matziolis
Christian König
William R. Taylor
S. Hinterwimmer
H. Graichen
Hans-Christian Hege
G. Bergmann
Carsten Perka
G. N. Duda
Visual Data Analysis
Visual Data Analysis in Science and Engineering
Hege, Hans-Christian
Visual and Data-centric Computing
3820
2006
2006
eng
26
30
conferenceobject
Springer Berlin Heidelberg
0
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Atlas-basierte 3D-Rekonstruktion des Beckens aus 2D-Projektionsbildern
Bildverarbeitung für die Medizin 2006: Algorithmen - Systeme - Anwendungen
10.1007/3-540-32137-3_6
Hans Lamecker
Thomas Wenckebach
Hans-Christian Hege
Georg N. Duda
Markus Heller
Visual Data Analysis
Therapy Planning
Hege, Hans-Christian
Lamecker, Hans
BSRT-3DFromXray
MATHEON-F2
Visual and Data-centric Computing
7882
2020
eng
article
0
2020-10-23
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Quantifying Asymmetry in Gait: A Weighted Universal Symmetry Index to Evaluate 3D Ground Reaction Forces
Though gait asymmetry is used as a metric of functional recovery in clinical rehabilitation, there is no consensus on an ideal method for its evaluation. Various methods have been proposed but are limited in scope, as they can often use only positive signals or discrete values extracted from time-scale data as input. By defining five symmetry axioms, a framework for benchmarking existing methods was established and a new method was described here for the first time: the weighted universal symmetry index (wUSI), which overcomes limitations of other methods. Both existing methods and the wUSI were mathematically compared to each other and in respect to their ability to fulfill the proposed symmetry axioms. Eligible methods that fulfilled these axioms were then applied using both discrete and continuous approaches to ground reaction force (GRF) data collected from healthy gait, both with and without artificially induced asymmetry using a single instrumented elbow crutch. The wUSI with a continuous approach was the only symmetry method capable of determining GRF asymmetries in different walking conditions in all three planes of motion. When used with a continuous approach, the wUSI method was able to detect asymmetries while avoiding artificial inflation, a common problem reported in other methods. In conclusion, the wUSI is proposed as a universal method to quantify three-dimensional GRF asymmetries, which may also be expanded to other biomechanical signals.
Frontiers in Bioengineering and Biotechnology
yes
2020-09-18
Sónia Alves
Rainald Ehrig
Rainald Ehrig
Peter C. Raffalt
Alwina Bender
Georg Duda
Alison N. Agres
Numerical Mathematics
Computational Systems Biology
Ehrig, Rainald
DFG-Knee-Laxity
Modeling and Simulation of Complex Processes