This article and any supplementary material should be cited as follows: Levy A, Kopplin K, Gefen A. Computer simulations of efficacy of air-cell- based.

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This article and any supplementary material should be cited as follows: Levy A, Kopplin K, Gefen A. Computer simulations of efficacy of air-cell- based cushions in protecting against reoccurrence of pressure ulcers. J Rehabil Res Dev. 2014;51(8):1297– Slideshow Project DOI: /JRRD JSP Computer simulations of efficacy of air-cell-based cushions in protecting against reoccurrence of pressure ulcers Ayelet Levy, MSc; Kara Kopplin, BS; Amit Gefen, PhD

This article and any supplementary material should be cited as follows: Levy A, Kopplin K, Gefen A. Computer simulations of efficacy of air-cell- based cushions in protecting against reoccurrence of pressure ulcers. J Rehabil Res Dev. 2014;51(8):1297– Slideshow Project DOI: /JRRD JSP Aim – Evaluate biomechanical efficacies of air-cell-based (ACB) cushion for individuals with spinal cord injury (SCI) with previous pressure ulcers (PUs) that healed but left scars in their soft tissues. Relevance – For individuals with SCI who depend on a wheelchair for mobility, sitting-acquired PUs are common and life endangering.

This article and any supplementary material should be cited as follows: Levy A, Kopplin K, Gefen A. Computer simulations of efficacy of air-cell- based cushions in protecting against reoccurrence of pressure ulcers. J Rehabil Res Dev. 2014;51(8):1297– Slideshow Project DOI: /JRRD JSP Method Used 11 finite element buttock model variants describing various scar shapes and severities to study: – Effects of scars on soft tissue stresses during sitting on ACB cushion. – Resulting theoretical risk for PU reoccurrence.

This article and any supplementary material should be cited as follows: Levy A, Kopplin K, Gefen A. Computer simulations of efficacy of air-cell- based cushions in protecting against reoccurrence of pressure ulcers. J Rehabil Res Dev. 2014;51(8):1297– Slideshow Project DOI: /JRRD JSP Results ACB cushion induced lower peak stress values in soft tissues of buttocks when scarring was present with respect to stress levels in (nonscarred) reference case.

This article and any supplementary material should be cited as follows: Levy A, Kopplin K, Gefen A. Computer simulations of efficacy of air-cell- based cushions in protecting against reoccurrence of pressure ulcers. J Rehabil Res Dev. 2014;51(8):1297– Slideshow Project DOI: /JRRD JSP Conclusion Our simulations suggest that ACB cushion is generally better at protecting patients with history of severe PUs manifested by large, possibly deep-tissue, scarring in their buttocks.