Description: Closed-foam single layer material (40 durometer) Advantages: Long-lasting, initially provides good cushion, mildly rigid so it slides into shoes quite easily, conforms easily to curvatures such as deep heel

Any material used to act as an interface between the device and the foot. It is intended to cushion, finish or give the orthosis better wear resistance.

A pocket pressed into an orthotic shell and filled with Poron to accommodate a plantar prominence. It is commonly used to accommodate a prominent navicular tuberosity. Only available on vacuum-formed

The medial corner of the orthosis plate is removed starting distally from the 1st intermetatarsal space and extending proximally to the 1st metatarsal base. The intent is to further plantarflex

A groove pressed into the orthosis to accommodate a prominent plantar fascia. This can only be fabricated on a vacuum-formed orthosis.

An increase in the height of the orthosis on the medial side of the device starting just distal to the heel and extending to the distal edge with the apex

Blake inversion refers to balancing the positive cast more than 10 degrees inverted. Additional modifications are performed to make the arch height tolerable. This technique is available only in plaster.

A cast correction technique used to artificially increase the medial arch of the device, move the apex distally, and shift the center of the heel cup laterally. The positive cast