A review of pressure measurements as a characterization of the seating interface is presented alo... more A review of pressure measurements as a characterization of the seating interface is presented along with a discussion of their limitations in evaluating potentially adverse conditions that may lead to pressure sore formation. A theoretical rationale is then developed for using tissue shape and deformation, in contrast to pressure, as a conceptualization of the seating interface. Previous studies that have investigated shape and deformation as a characterization of the seating interface, as well as those that have utilized shape measurement for cushion fabrication, are reviewed in light of the theoretical rationale presented. It is concluded that although the efficacy of tissue shape and deformation as a characterization of the seating interface has not been clinically proven, they provide a more direct measure of the net effect of external load, mechanical tissue properties, and boundary conditions (cushion effects) as compared to pressure measurements.
A review of pressure measurements as a characterization of the seating interface is presented alo... more A review of pressure measurements as a characterization of the seating interface is presented along with a discussion of their limitations in evaluating potentially adverse conditions that may lead to pressure sore formation. A theoretical rationale is then developed for using tissue shape and deformation, in contrast to pressure, as a conceptualization of the seating interface. Previous studies that have investigated shape and deformation as a characterization of the seating interface, as well as those that have utilized shape measurement for cushion fabrication, are reviewed in light of the theoretical rationale presented. It is concluded that although the efficacy of tissue shape and deformation as a characterization of the seating interface has not been clinically proven, they provide a more direct measure of the net effect of external load, mechanical tissue properties, and boundary conditions (cushion effects) as compared to pressure measurements.
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