Evaluation of plantar flexion contracture contribution during the gait of children with Duchenne muscular dystrophy
| Autor: | Nathaly Gaudreault, Denis Gravel, Sylvie Nadeau |
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| Rok vydání: | 2009 |
| Předmět: |
Male
musculoskeletal diseases Weakness medicine.medical_specialty Duchenne muscular dystrophy Biophysics Neuroscience (miscellaneous) Models Biological Plantar flexion Physical medicine and rehabilitation medicine Humans Computer Simulation Muscular dystrophy Child Muscle Skeletal Gait Muscle contracture business.industry musculoskeletal system medicine.disease Muscular Dystrophy Duchenne body regions Plantar flexion contractures medicine.anatomical_structure Torque Female Neurology (clinical) medicine.symptom Ankle Contracture business human activities Ankle Joint Muscle Contraction |
| Zdroj: | Journal of Electromyography and Kinesiology. 19:e180-e186 |
| ISSN: | 1050-6411 |
| Popis: | Because of extensor weakness, children with Duchenne muscular dystrophy (DMD) maintain internal flexion moments at the joints of the lower extremities when they walk. We believe that at the ankle, the plantar flexion moments caused by contractures may contribute significantly to the production of the net ankle flexion moment during the gait in these children. The goal of the present study is to quantify ankle plantar flexion passive moments that may be associated with the presence of flexion contractures and to estimate their contribution to the net moment during the gait of children with DMD. Kinematic and kinetic parameters were collected during gait of eleven subjects with DMD. Ankle plantar flexion passive moments were also measured experimentally during the same session. Fourteen control children participated in the study in order to have normal reference values. The presence of ankle plantar flexion contractures in children with DMD was reflected by a rigidity coefficient obtained at a common moment of -7 Nm that was higher for these children (0.75 Nm/degrees vs. 0.48 Nm/degrees; p0.05). The relative passive moment contribution to the net plantar flexion moments was higher for the children with DMD at the end of the lengthening phase of the plantar flexors (25% vs. 18%; p0.05). We believe that the passive moments can compensate for the presence of progressive muscle weakness in the children with DMD and help these children with gait. |
| Databáze: | OpenAIRE |
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