Solid AFOs for Kids: What They Do and How to Choose Shoes

A solid (rigid) ankle-foot orthosis holds the ankle in a fixed position, allowing essentially no movement at the joint. It's the most stabilizing type of AFO, and an orthotist may prescribe one for a child who needs maximum control - significant muscle weakness, stronger spasticity, or an ankle that needs to be held in safe alignment to stand and walk.

What a solid AFO does

By blocking ankle motion, a solid AFO provides a stable base, helps prevent the foot from dropping or rolling, manages tone, and can protect the joint's alignment over time. The trade-off for that stability is rigidity - the brace itself adds real volume and length to the foot, which is exactly why the shoe matters.

What to look for in a shoe

• A full-opening upper so the rigid brace doesn't have to be forced through a narrow entry.
• Removable insoles to free up depth for the brace.
• Extra width and volume to hold the AFO and the foot without pressure points.
• A secure closure to lock everything in once it's on.

How BILLY fits a solid AFO

BILLY's zip-around opening folds the upper completely back, so a rigid brace sets in from the top with no forcing. The BILLY Goat adds the most depth - two removable 3mm insoles plus a wedge insert - and is CPMA-certified, which makes it a strong match for a bulkier solid AFO. The deeper Classic D|R II in Wide or Extra-Wide is another good option.

Shop and learn more

See brace-ready styles in Kids' AFO Shoes, and read our overview of how to fit shoes over any AFO. Your child's orthotist prescribes the brace type and is the best guide to fit - bring the AFO when you size shoes.