The SACH foot with passive keel is the most basic type of foot....
Building on the basics of the SACH foot, a dynamic keel adds function....
Incorporates toe-up and toe-down movements at the ankle....
Multiple joints provide more natural function....
Reduce energy requirements by returning energy at toe off....
These feet allow the heel height to be customized by the user....
Shock absorbers reduce forces transmitted to the socket....
Feet which have a special purpose, like sporting activities....
Use a micro-processor to drive ankle function....