Tibialis Posterior Dysfunction
Pronunciation: tib-ee-AY-lis pos-TEER-ee-or
A progressive condition involving failure of the tibialis posterior tendon, resulting in acquired flatfoot deformity and altered lower-limb biomechanics.
Full Definition
Tibialis posterior dysfunction (TPD), also referred to as adult-acquired flatfoot, is one of the most common indications for foot orthosis prescription in adult patients. The condition progresses through clinical stages characterised by pain, tendon degeneration, and eventual rigid deformity. Editors will encounter this term in clinical case notes, orthotics referral letters, and rehabilitation protocols. It is frequently abbreviated as TPD in clinical documents; the abbreviation should be expanded on first use. The condition is distinct from pes planus (flatfoot) of congenital or paediatric origin.
Usage
Usage note: Abbreviate as TPD only after first full use; 'PTTD' (posterior tibial tendon dysfunction) is common in North American literature.
In Context
- "The patient was referred for orthotic management following a diagnosis of tibialis posterior dysfunction stage II." — Orthotics referral letter
- "Tibialis posterior dysfunction should not be conflated with simple pes planus in clinical documentation." — Editorial review guideline