Rx template

Pes Cavus & Lateral Instability

The high-arched foot concentrates load on a heel, a lateral border and a row of met heads, and it sprains. The template buys contact area, cushioning, and a steady steer back toward the midline.

Style
Full-length or ¾-length, cushioning bias
Density map
Softer overall (≈30–40A); cavus feet need shock absorption more than control

Corrections print into the heel seat and lateral geometry while the base stays flat, so the added contact is rock-stable in the shoe, which matters for a foot that already feels precarious.

What you'll see

  • A high arch with clawed toes and prominent met heads
  • Callus at the heel, lateral border and 1st/5th met heads
  • Recurrent inversion sprains or lateral “giving way”
  • A lateral shoe-wear pattern
  • Progressive or asymmetric cases warrant a neurologic screen

The modifier package

Lateral Heel SkiveAdds the pronation moment this foot won't find on its own
Lateral WallContains lateral drift with a guiding flange
Medial ArchTotal contact spreads a badly concentrated load
Metatarsal BarOffloads the met-head row
Styloid Process NotchKeeps the lateral border off the 5th met base

Worth considering

Lateral ReinforcementDurability where this foot loads hardest
Cuboid NotchWhen the cuboid is prominent or tender
Heel Cup DepthExtra rearfoot steadiness at contact

Clinical note

A progressive or asymmetric cavus deserves a neurological work-up (think CMT) alongside the orthotic plan, not instead of it.

Every template is a starting prescription, not a constraint. Each parameter stays fully editable in Rx Studio before you send the order.

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