C.Ped key terms

The allied health profession concerned with the design, manufacture, fitting, and modification of footwear and foot orthoses to prevent or accommodate disabling conditions of the foot and lower limb.

The legally defined set of activities a certified or licensed pedorthist may perform, typically assessing, fitting, fabricating, and modifying footwear and orthoses rather than diagnosing disease or performing surgery.

The position in which the foot is neither pronated nor supinated and the talonavicular joint is maximally congruent; used as a reference point when evaluating alignment and casting a foot.

A triplanar motion of the foot combining dorsiflexion, abduction, and eversion, normally used to absorb impact after heel strike; excessive or prolonged pronation commonly prompts an orthotic referral.

A triplanar motion combining plantarflexion, adduction, and inversion, normally used to stiffen the foot into a lever for push-off; excessive supination reduces shock absorption and increases lateral ankle risk.

A deformity in which the forefoot is inverted relative to the rearfoot when the subtalar joint is held neutral, so the first metatarsal head sits higher than the fifth.

A deformity in which the forefoot is everted relative to the rearfoot with the subtalar joint neutral, so the first metatarsal head sits lower than the fifth and the foot may compensate by supinating.

A condition in which the calcaneus is inverted relative to the lower leg when the subtalar joint is neutral, so the foot must pronate during stance to bring the medial border to the ground.

An outward bowing of the lower leg that places the knee medial to the ankle, often producing a rigid, inverted foot that resists normal pronation during walking.

A measurement comparing navicular tuberosity height when sitting and when standing; a difference of roughly 10 mm or more suggests excessive pronation and a need for arch support.

A test in which the examiner passively extends the great toe while the patient stands; the medial arch should rise and the heel invert, and failure to do so suggests a rigid flatfoot.

A test in which the lateral foot is placed on a block so the first metatarsal is unsupported; if the heel corrects out of varus, the deformity is forefoot driven rather than fixed.

A measurement of how far the knee can travel over the foot with the heel kept on the floor, used to detect limited ankle dorsiflexion that alters gait and orthotic design.

A limp in which the patient shortens stance time on a painful limb to limit loading, producing an uneven walking rhythm that the examiner can observe and document.

The inability to feel injurious pressure or pain, most often from diabetic neuropathy; it is a primary reason for protective footwear, insoles, and frequent skin checks.

A calibrated nylon filament that bends at a set force, usually 10 grams, when pressed against the skin, used to screen whether a patient can detect protective pressure.

The ratio of ankle systolic blood pressure to arm systolic blood pressure; a low value indicates poor lower-limb circulation and raises concern about wound healing and safe device fitting.

A break in the skin on the sole of the foot, often over a bony prominence in a person with neuropathy or poor circulation, requiring pressure relief and close monitoring to heal.

A foot-shaped form on which a shoe is built; its geometry, described as straight, semicurved, or curved, strongly influences how much support and motion control the finished shoe offers.

A device designed to change foot motion and alignment, usually by controlling the rearfoot or supporting the arch, rather than simply cushioning the sole of the foot.

A device designed mainly to cushion, redistribute pressure, and fill space for a deformed or insensate foot, rather than to correct alignment or restrict motion.

A deep-heeled orthosis with high medial and lateral walls and no arch fill, which grips the rearfoot to limit excessive pronation; often chosen for a flexible flatfoot.

A device made from a three-dimensional model or scan of an individual foot, placed inside footwear to control alignment, support the arch, or redistribute pressure.

A wedge of material added beneath the orthosis shell at the heel or forefoot that tilts the device and changes ground reaction forces, commonly used for varus or valgus deformities.

A deep, bowl-shaped contour around the heel of an orthosis or shoe that cradles the calcaneus, helping to control rearfoot motion and cushion impact during walking.

A pad placed just behind the metatarsal heads on an insole to lift and spread the transverse arch, relieving pressure under the ball of the foot.

A shoe modification with a stiff, curved sole that reduces bending forces across the forefoot, often used to protect a painful joint or an ulcer on the ball of the foot.

A technique in which the patient's foot is captured in a foam block, plaster wrap, or digital scan to record its exact shape for fabricating a custom orthosis.

The step of adding or removing plaster on a foot model to alter arch height, heel position, or width before the orthotic shell is formed over it.

Reducing pressure on a specific area of the foot using pads, cushions, orthoses, or shoe changes so that damaged or painful tissue can rest and heal.

A gradual schedule of increasing wear time for new orthoses or shoes, usually starting with one to two hours daily, allowing tissues to adapt and pressure problems to surface.

A scheduled recheck after a device is delivered to confirm fit, inspect the skin, review symptoms, and adjust or replace the device as the patient's condition changes.

The degree to which a patient wears and uses a prescribed device exactly as instructed; it is reviewed at follow-up because non-use is a frequent cause of failed orthotic treatment.

A structured clinical record documenting subjective complaints, objective findings, assessment, and plan; it justifies device selection and supports insurance claims and later comparison.

Explaining the purpose, risks, alternatives, and expected results of a proposed device or procedure so the patient can voluntarily agree before work begins.

A standardized billing code used to describe orthotic and prosthetic devices on insurance claims; correct use depends on accurate documentation of the device and the patient's condition.

Infection-control practices such as hand hygiene and gloves applied to every patient whenever contact with blood, wound drainage, or other body fluids is possible.