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Orthotics Glossary

105 terms total — 9 showing — Last updated 15 Sep 2026

Static Orthosis

Basic Technical IVT

An orthotic device with no moving parts that immobilises a body segment in a fixed position to promote healing, prevent deformity, or maintain alignment.

Showing 97–105 of 105

Tone-Inhibiting Casting

Advanced Technical IVT

A technique using inhibitory positioning within a plaster or fibre-glass cast to reduce pathological muscle tone in spas...

Technical Term Full entry →

Tone-Reducing AFO

Advanced Technical IVT

A custom ankle-foot orthosis designed with specific foot-plate contours and trim lines to inhibit abnormal muscle tone,...

Technical Term Full entry →

Total Contact Cast

Advanced Technical IVT

A closely moulded, non-removable lower-leg cast that distributes plantar pressure across the entire plantar surface to f...

TCC
Technical Term Full entry →

Trim Line

Intermediate Technical IVT

The edge or contour cut into a thermoplastic orthosis that determines the device's extent and thereby its stiffness and...

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Unloading Orthosis

Advanced Technical IVT

An orthotic device designed to redistribute mechanical forces away from a damaged or diseased compartment of a joint, mo...

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Valgus

Intermediate Technical IVT

An anatomical alignment in which a body part is angulated or deviated away from the midline of the body, such as the out...

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Varus

Intermediate Technical IVT

An anatomical alignment in which a body part is angulated or deviated toward the midline of the body, such as the inward...

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WHFO

Advanced Technical IVT

Acronym for Wrist-Hand-Finger Orthosis, a device that extends support from the wrist through the hand to one or more fin...

Abbreviation Full entry →

WHO

Intermediate Technical IVT

Acronym for Wrist-Hand Orthosis, a device that immobilises or supports the wrist and hand, used in rehabilitation after...

Abbreviation Full entry →
Showing 97–105 of 105

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