SACH-SAWCH

An orthosis with a stop to limit dorsiflexion (solid ankle) and a foot plate stiff to the metatarsal heads (soft at toes) give us a perfectly normal walk. The circle seen is of her 'stature wheel', diameter = stature. Stride, which is two steps R&L, is 75% of the DIAMETER of this wheel. Each step is 75% of the RADIUS of this same wheel. Easy, huh?

The heel is cushioned. As that wedge cushion has no place to exist within the brace, it is put in the shoe heel. Thus prosthetic Solid Ankle Cushioned Heel

= SACH.

It becomes

Solid Ankle Wedge Cushioned Heel = SAWCH when the AFO+shoe need angular forward tilt adjustment that the anatomy isn't allowing.