Understanding insole design parameters.

Raises the inner (medial) side of the forefoot. Increases medial support and helps correct forefoot varus — where the forefoot sits inverted relative to the rearfoot. Improves balance and propulsion symmetry during push-off.

FOREFOOT · Varus Post · medial raise

Raises the outer (lateral) side of the forefoot. Improves lateral stability and reduces pressure on the outer forefoot — useful for forefoot valgus, where the forefoot sits everted. Also used for lateral metatarsal offloading.

FOREFOOT · Valgus Post · lateral raise

Controls how high the longitudinal arch support rises. Higher values provide stronger arch support and are suited to flat feet or pronation correction. Lower values feel more comfortable for neutral or high arches where aggressive support would create pressure.

MIDFOOT · Arch Height · vertical rise of arch

Controls how far forward the arch support extends along the foot. Larger values extend coverage further into the midfoot, providing support across a broader area of the plantar surface. Shorter arch lengths concentrate support closer to the heel.

MIDFOOT · Arch Length · forward coverage

Adds a raised sidewall along the inner (medial) border of the insole. Helps prevent the foot from rolling inward (pronation) by providing a physical wall that guides the foot into a more neutral position. Particularly useful for hyperpronation or tibialis posterior insufficiency.

MIDFOOT · Medial Flange · inner sidewall height

Adds a raised sidewall along the outer (lateral) border of the insole. Improves lateral stability and helps prevent excessive outward rolling (supination). Also used for ankle instability rehabilitation where lateral foot control is a priority.

MIDFOOT · Lateral Flange · outer sidewall height

Controls how deeply the heel is contained within the cup of the insole. A deeper cup improves stability and control by preventing the calcaneal fat pad from spreading laterally under load. Shallower cups are more comfortable but provide less mechanical control. This is the single most impactful rearfoot parameter for most patients.

REARFOOT · Heel Cup Depth · calcaneal containment

Raises the inner (medial) heel. Used to correct rearfoot varus — where the calcaneus sits in an inverted position. Helps control excessive pronation by bringing the rearfoot toward neutral and reducing the amount of subtalar joint motion needed to reach foot-flat.

REARFOOT · Varus Post · medial heel raise

Raises the outer (lateral) heel. Used to correct rearfoot valgus — where the calcaneus sits in an everted position. Helps control excessive supination and improves lateral stability during heel strike. Commonly used for high-arched feet and lateral ankle instability.

REARFOOT · Valgus Post · lateral heel raise

A localised bevel or reduction on the inner (medial) underside of the heel. Creates a ground reactive force that pushes the calcaneus into inversion — providing a stronger pronation control effect than posting alone. The Kirby skive technique; particularly useful for severe pronation, tibialis posterior dysfunction, and plantar fasciitis.

REARFOOT · Medial Skive · inner heel bevel

A localised bevel on the outer (lateral) underside of the heel. Creates a ground reactive force that pushes the calcaneus into eversion, improving lateral control and stability. Used for supination, high-arched feet, and lateral ankle instability where the heel needs to be guided laterally at contact.

REARFOOT · Lateral Skive · outer heel bevel