A Ground Reaction Ankle Foot Orthosis (GRAFO) is a specialized type of orthotic device designed primarily to enhance knee control during the stance phase of walking. The GRAFO functions by providing a solid structural support that acts as a strut between the ankle and the knee, thus leveraging the strength of the tibia. This can be especially beneficial for individuals who may have difficulty maintaining knee stability while standing or walking.

The GRAFO is similar to a rigid Ankle Foot Orthosis (AFO), with a key difference being the inclusion of an anterior shell. This shell helps distribute loads more evenly and facilitates triplanar control of the foot, which can lead to improved overall mobility for the user. The device keeps the ankle in a slightly plantarflexed (PF) position, enhancing its effectiveness in controlling knee motion during weight-bearing activities.

For further information, you can refer to the following resources:

1. Orthotics Plus: Ground Reaction AFO, detailing the objectives and fitting of GRAFOs.
2. Physiopedia: Foundations for Ankle Foot Orthoses, which outlines the mechanics of GRAFOs.
3. Prime Care Prosthetics: Ground Reaction Ankle Foot Orthosis, which elaborates on design and usage.
4. Orthopedia Wiki: Ground Reaction AFO, providing a comprehensive overview of GRAFO functionality and structure.

These resources can help deepen your understanding of GRAFOs and their benefits in facilitating mobility and stability for those in need of such orthotic support.

Sources

Ground Reaction AFO | Fitting & Assessment - Orthotics PlusFoundations for Ankle Foot Orthoses - PhysiopediaGround Reaction Ankle Foot Orthosis (GRAFO), New Mexico[PDF] AFO TYPES AND CONSIDERATIONSGround Reaction AFO | Orthopedia Wiki - FandomFloor Reaction Orthosis (FRO) - YouTubeWalkOn Reaction Ankle Foot Orthosis - Orthotics - Ottobock CA Shop

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