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Pressure-reducing capability of Conforma II mattress overlay.

Pressure readings over the sacral and trochanter areas were obtained on 30 healthy adult volunteers. An anatomically contoured mattress overlay (Conforma II) was compared to a standard hospital mattress. The difference in the mean pressures over the sacral areas represented a 52% reduction in pressure, whereas, a 46% pressure reduction was obtained over the trochanter area. Body weight was significantly associated with higher mean pressures.