Pes Planus
Pronunciation: pees PLAY-nus
A foot deformity characterized by loss or absence of the medial longitudinal arch, commonly called flat foot.
Full Definition
Pes planus, commonly known as flat foot or fallen arches, is a foot deformity characterized by loss or absence of the normal medial longitudinal arch. The condition can be flexible (arch present when non-weight-bearing but collapses with weight-bearing) or rigid (fixed deformity). Pes planus may be congenital or acquired, with acquired forms often resulting from posterior tibial tendon dysfunction, trauma, or degenerative changes. While many individuals with pes planus remain asymptomatic, others may experience pain, fatigue, and functional limitations. Treatment ranges from conservative measures like orthotics and physical therapy to surgical reconstruction depending on symptoms and functional impact.
Usage
Usage note: Use 'pes planus' in formal documentation rather than 'flat foot'; specify flexible vs. rigid type when known.
In Context
- "The patient presents with symptomatic flexible pes planus and associated medial foot pain." — Clinical assessment
- "Triple arthrodesis was recommended for the rigid pes planus deformity with arthritis." — Surgical consultation