Performance Laboratories applies the highest laboratory standards in the Industry.

Every foot is evaluated and corrected for biomechanical deficiencies, coupled with your doctors clinical evaluation and prescription, you can't find a more accurate orthotic device.

We invite you to see the "behind the scenes" work that goes into each and every device we make.

FUNCTIONAL CAST PREPARATION / LAB STANDARDS

Negative casts of the feet are evaluated and set on a level surface.

Blue Plaster is poured into the negative cast. The positive cast is formed and the negative is removed. A pin is inserted in the center of the 1st metatarsal head.  A bisection line is drawn at the posterior heel that represents calcaneal position.

The inserted pin at the 1st metatarsal head is set so it positions the casts heel bisection line to be perpendicular to the level surface it was set on. The forefoot
deformity is now realized by evaluating the amount the pin is extended outward from the cast. The top of the cast is planed so it is also perpendicular with the heel bisection line.

White plaster is added and contoured to the top of the pin to create the slope for the intrinsic post that will correct the forefoot deformity.  Plaster is added to other areas of the positive cast to allow for fat pad expansion upon weight bearing.  Orthotic parameters are established and drawn on the corrected positive.

Shell material is thermoformed to the corrected positive cast and cut to the
specified parameters.

A rearfoot post is adhered to the shell and planed so that it positions the positive casts rearfoot bisection line at 4 degrees inverted lab standard.

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ACCOMMODATIVE CAST PREPARATION / LAB STANDARDS

The positive cast (Fig 2) is left uncorrected and flexible shell material is formed to it. Filler material is adhered from the heel to the forefoot on the bottom of the shell material. The filler material in the forefoot is planed so that it positions the positive casts rearfoot bisection line at perpendicular. The rearfoot filler material is then planed so that it positions the rearfoot bisection line at 4 degrees inverted lab standard.  See Fig 6

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