Selective laser sintering (SLS) is a well-suited additive manufacturing technique for generating subject-specific passive-dynamic ankle-foot orthoses (PD-AFOs). However, the mechanical properties of SLS PD-AFOs may differ from those of commonly prescribed carbon fiber (CF) PD-AFOs. Therefore, the goal of this study was to determine if biomechanical measures during gait differ between CF and stiffness-matched SLS PD-AFOs. Subject-specific SLS PD-AFOs were manufactured for ten subjects with unilateral lower-limb impairments. Minimal differences in gait performance occurred when subjects used the SLS versus CF PD-AFOs. These results support the use of SLS PD-AFOs to study the effects of altering design characteristics on gait performance.
Selective Laser Sintered Versus Carbon Fiber Passive-Dynamic Ankle-Foot Orthoses: A Comparison of Patient Walking Performance
Manuscript received December 12, 2013; final manuscript received May 22, 2014; accepted manuscript posted May 29, 2014; published online June 26, 2014. Assoc. Editor: Paul Rullkoetter.
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Harper, N. G., Russell, E. M., Wilken, J. M., and Neptune, R. R. (June 26, 2014). "Selective Laser Sintered Versus Carbon Fiber Passive-Dynamic Ankle-Foot Orthoses: A Comparison of Patient Walking Performance." ASME. J Biomech Eng. September 2014; 136(9): 091001. https://doi.org/10.1115/1.4027755
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