Dynamic estimation of soft tissue stiffness for use in modeling socket, orthosis or exoskeleton interfaces with lower limb segments
| Autor: | Sacha Guitteny, Yoann Lafon, Vincent Bonnet, Rachid Aissaoui, Raphael Dumas |
|---|---|
| Přispěvatelé: | Laboratoire de Biomécanique et Mécanique des Chocs (LBMC UMR T9406 ), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Gustave Eiffel, Équipe Mouvement des Systèmes Anthropomorphes (LAAS-GEPETTO), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Laboratoire de recherche en imagerie et orthopédie [Montréal] (LIO), Ecole de Technologie Supérieure [Montréal] (ETS)-Centre Hospitalier de l'Université de Montréal (CHUM), Université de Montréal (UdeM)-Université de Montréal (UdeM), ANR-11-LABX-0063,PRIMES,Physique, Radiobiologie, Imagerie Médicale et Simulation(2011), ANR-11-IDEX-0007,Avenir L.S.E.,PROJET AVENIR LYON SAINT-ETIENNE(2011) |
| Rok vydání: | 2021 |
| Předmět: |
musculoskeletal diseases
Orthotic Devices TOTAL KNEE REPLACEMENT Knee Joint Rehabilitation Biomedical Engineering Biophysics [SPI.MECA.BIOM]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph] FEMUR TIBIA Exoskeleton Device PHYSICAL INTERFACE Biomechanical Phenomena body regions Lower Extremity Humans Orthopedics and Sports Medicine MOTION CAPTURE SEGMENT COMPLIANCE SOFT TISSUE DEFORMATION RAYON X |
| Zdroj: | Journal of Biomechanics Journal of Biomechanics, 2022, 134, pp.110987. ⟨10.1016/j.jbiomech.2022.110987⟩ |
| ISSN: | 1873-2380 0021-9290 |
| DOI: | 10.1016/j.jbiomech.2022.110987⟩ |
| Popis: | International audience; Modeling the interface between the lower limb segments and a socket, orthosis or exoskeleton is crucial to the design, control, and assessment of such devices. The present study aimed to estimate translational and rotational soft tissue stiffness at the thigh and shank during daily living activities performed by six subjects. Smooth orthogonal decomposition (SOD) was used on skin marker trajectories and fluoroscopy-based knee joint kinematics to compute stiffness coefficients during squatting, sitting and rising from a chair, level walking, and stair descending. On average, for all subjects and for all activities, in the anatomical directions observed, the translational and rotational stiffness coefficients for the shank were, respectively, 1.4±1.99kN/m (median and interquartile range) and 41.5±34.3Nm/deg. The results for the thigh segment were 1.79±2.73kN/m and 30.5±50.4Nm/deg. As previously reported in the literature dealing with the soft tissue artifact - considered as soft tissue deformation in this study - the computed stiffness coefficients were dependent on tasks, subjects, segments, and anatomical directions. The main advantage of SOD over previous methods lies in enabling estimation of a task-dependent 6×6 stiffness matrix of the interface between segments and external devices, useful in their modeling and assessment. |
| Databáze: | OpenAIRE |
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