Which KAFO system emphasizes triplanar control through a plastic-metal combination?

• A. Conventional AFO
• B. Craig-Scott KAFO
• C. Oregon orthotic system
• D. Fracture brace KAFO

Answer: (C)

Tri-planar control means guiding and limiting motion in all three planes around the knee and ankle—sagittal, frontal, and transverse—to keep alignment stable during walking. The Oregon orthotic system achieves this best by using a plastic shell that conforms closely to the limb together with a metal joint and uprights. The plastic provides a solid, well‑fitted base, while the metal components supply precise rotational and varus/valgus control and adjustable alignment. This hybrid design allows the orthosis to resist unwanted motion in multiple planes while preserving necessary flexion and extension, giving robust, customizable multi‑plane stability for gait. Other options tend to emphasize simpler, primarily sagittal control or immobilization and don’t combine plastic shells with metal joints in a way that delivers true tri‑planar stability.