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This article and any supplementary material should be cited as follows: Zou D, He T, Dailey M, Smith KE, Silva MJ, Sinacore DR, Mueller MJ, Hastings MK.

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Presentation on theme: "This article and any supplementary material should be cited as follows: Zou D, He T, Dailey M, Smith KE, Silva MJ, Sinacore DR, Mueller MJ, Hastings MK."— Presentation transcript:

1 This article and any supplementary material should be cited as follows: Zou D, He T, Dailey M, Smith KE, Silva MJ, Sinacore DR, Mueller MJ, Hastings MK. Experimental and computational analysis of composite ankle-foot orthosis. J Rehabil Res Dev. 2014;51(10):1525–36. http://dx.doi.org/10.1682/JRRD.2014.02.0046 Slideshow Project DOI:10.1682/JRRD.2014.02.0046 JSP Experimental and computational analysis of composite ankle-foot orthosis Dequan Zou, DSc; Tao He, MS; Michael Dailey, MBA, CO; Kirk E. Smith, BS; Matthew J. Silva, PhD; David R. Sinacore, PhD, PT; Michael J. Mueller, PhD, PT; Mary K. Hastings, DPT, MSCI

2 This article and any supplementary material should be cited as follows: Zou D, He T, Dailey M, Smith KE, Silva MJ, Sinacore DR, Mueller MJ, Hastings MK. Experimental and computational analysis of composite ankle-foot orthosis. J Rehabil Res Dev. 2014;51(10):1525–36. http://dx.doi.org/10.1682/JRRD.2014.02.0046 Slideshow Project DOI:10.1682/JRRD.2014.02.0046 JSP Aim – Develop finite element analysis (FEA) models to predict mechanical behavior of ankle-foot orthoses (AFOs). Relevance – Carbon fiber (CF) AFOs can improve gait by improving ankle plantar flexor power, joint moment, and energy efficiency. – However, CF AFO fabrication may be expensive and require multiple AFOs.

3 This article and any supplementary material should be cited as follows: Zou D, He T, Dailey M, Smith KE, Silva MJ, Sinacore DR, Mueller MJ, Hastings MK. Experimental and computational analysis of composite ankle-foot orthosis. J Rehabil Res Dev. 2014;51(10):1525–36. http://dx.doi.org/10.1682/JRRD.2014.02.0046 Slideshow Project DOI:10.1682/JRRD.2014.02.0046 JSP Method Fabricated 1 thermoplastic and 2 CF composite AFOs. Mechanically tested AFOs to produce force- displacement data. Validated FEA models by comparing model predictions with mechanical testing data performed under same loading and boundary conditions.

4 This article and any supplementary material should be cited as follows: Zou D, He T, Dailey M, Smith KE, Silva MJ, Sinacore DR, Mueller MJ, Hastings MK. Experimental and computational analysis of composite ankle-foot orthosis. J Rehabil Res Dev. 2014;51(10):1525–36. http://dx.doi.org/10.1682/JRRD.2014.02.0046 Slideshow Project DOI:10.1682/JRRD.2014.02.0046 JSP Results Actual mechanical testing: – Demonstrated that CF performs better than thermoplastic. Simulation results: – Showed that FEA models produced accurate predictions for both AFO types. Relative error of energy return ratio predicted by CF AFO FEA model is <3%.

5 This article and any supplementary material should be cited as follows: Zou D, He T, Dailey M, Smith KE, Silva MJ, Sinacore DR, Mueller MJ, Hastings MK. Experimental and computational analysis of composite ankle-foot orthosis. J Rehabil Res Dev. 2014;51(10):1525–36. http://dx.doi.org/10.1682/JRRD.2014.02.0046 Slideshow Project DOI:10.1682/JRRD.2014.02.0046 JSP Conclusion Highly accurate FEA models will allow orthotists to improve CF AFO fabrication without wasting time and money on trial and error fabrications that are expensive and do not consistently improve AFO and user performance.


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