An addition made to the full length sole of one shoe to accommodate for a leg length difference

Lift/elevation >35mm

Heel raise/elevation/replacement

external 

 An addition made to the full length soles (usually of both shoes) to relieve pain in the ball of the foot or to improve gait for patients by 

aiding the heel contact or push off phase of gait. 

 A widening of the medial or lateral base of the shoe to strengthen the shoe and reduce distortion. 

 Placing a hard plate under the toe to reduce friction and increase durability when a foot drags 

 A built up on the bottom of the shoe behind the metatarsal heads to reduce the pressure on the metatarsal heads. 

Valgus/varus wedge external

 A wedge added to the midsole of the shoe to change the foot angle during weight bearing. 

 Cutting and widening a portion of the midsole and outsole to increase the base of support or accommodate a foot deformity 

 Removing material from the midsole and insole of a shoe to reduce pressure under a specific area 

 A wedge of cushioned material added in the midsole under the heel to increase cushioning

 A steel or carbom fibre plate inserted into the midsole to stiffen the shank of a shoe. Used to reduce pressure and bending in the forefoot 

 An extension of the medial portion of a low heeled shoe to increase the medial stability of the shoe