Rearfoot Post
A wedge element placed in the heel section of an orthosis to control subtalar joint motion and calcaneal alignment.
Full Definition
A rearfoot post is a wedge or platform built into or applied beneath the heel cup of an orthotic device to influence the position and motion of the calcaneus and subtalar joint. It is one of the most frequently prescribed orthotic modifications and is specified in degrees of varus or valgus angulation. Rearfoot posts may be 'motion-controlling' (fixed) or 'motion-limiting' (with a small amount of allowable movement before the wedge engages). Editors reviewing prescription forms or clinical notes should ensure the degree of correction and the motion type (fixed vs. motion-limiting) are clearly documented. The term is sometimes incorrectly rendered as 'rear-foot post' with a hyphen; the closed or open compound is standard.
Usage
Usage note: Specify angulation and type (fixed or motion-limiting) whenever editing orthotic prescriptions; omitting these details is a common documentation error.
In Context
- "A 4° varus rearfoot post was prescribed to limit calcaneal eversion during the stance phase." — Clinical prescription document
- "The rearfoot post was fabricated from high-density EVA to provide adequate motion control." — Orthotic laboratory report