Evaluation of a new sitting concept designed for prevention of pressure ulcer on the buttock using finite element analysis
| Autor: | Charles Fasanati, Dohyung Lim, Brian Moran, Fang Lin, Ronald W. Hendrix, Mohsen Makhsous |
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| Rok vydání: | 2007 |
| Předmět: |
Computer science
Finite Element Analysis Posture Biomedical Engineering Sitting medicine.disease_cause Models Biological Article Weight-bearing Weight-Bearing Stress (mechanics) Wheelchair medicine Humans Buttocks Pressure Ulcer Soft tissue Internal pressure Finite element method Computer Science Applications body regions medicine.anatomical_structure Wheelchairs Stress Mechanical Biomedical engineering |
| Zdroj: | Medical & Biological Engineering & Computing. 45:1079-1084 |
| ISSN: | 1741-0444 0140-0118 |
| DOI: | 10.1007/s11517-007-0261-3 |
| Popis: | Excessive compressive load induces pressure related soft tissue damage, i.e. pressure ulcer (PU), in buttock area in wheelchair users. In solving this problem, our previous study has introduced a concept of Off-Loading sitting, which partially removes the ischial support to reduce pressure under buttocks. However, the effect of this sitting concept has only been evaluated using the interface pressure and tissue perfusion measurements. The objective of this investigation was to evaluate the Off-Loading posture for its ability to reduce internal pressure and stress in deep buttock tissues. This evaluation was performed on a 3D finite element (FE) model which was established and validated in a sitting posture and has realistic material properties and boundary conditions. FE analysis in this study confirmed that the pressure relief provided by Off-Loading posture created profound effect in reducing the mechanical stress within deep tissues. It was concluded that Off-Loading posture may prove beneficial in preventing sitting related PU. |
| Databáze: | OpenAIRE |
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