Pronation
The inward rolling motion of the foot and ankle complex during weight-bearing, involving eversion of the subtalar joint and abduction of the forefoot.
Full Definition
Pronation is a triplanar motion of the foot and subtalar joint complex that occurs naturally during the loading phase of gait to absorb impact forces. In orthotics, excessive or prolonged pronation is a key clinical indicator for prescribing medial arch support or motion-control foot orthoses. Editors working on orthotic clinical notes or product descriptions must not confuse pronation with eversion, which is only one component of the full pronation motion. The term is commonly contrasted with supination in patient education materials and product literature. Accurate use of 'pronation' versus 'overpronation' is important; the latter implies a pathological degree and should only appear when clinically indicated.
Usage
Usage note: 'Overpronation' should be reserved for pathological contexts; avoid using it as a synonym for normal pronation in clinical copy.
In Context
- "The gait analysis report documented excessive pronation throughout the midstance phase, supporting the prescription of a medial wedge orthosis." — Gait analysis report
- "Writers should not use 'pronation' and 'eversion' interchangeably, as eversion refers only to the frontal-plane component of the motion." — Editorial style guide