Ankle-foot orthoses or AFO’s are external mechanical devices that support the foot and ankle to assist and improve the gait of patients with muscular and/or neurological problems in the lower leg region. To improve the functionality of these orthoses quite some experimental research projects have been carried out and published in the past. However, only a handful of projects included basic finite element analyses (FEA) [1–3], mainly because of the diversity and complex geometry of the AFO’s. This preliminary study should give raise to a series of detailed finite element analyses based on 3D laser scans of ankle-foot orthoses.

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