Posterior tibial tendon dysfunction (PTTD) is the inflammation or overstretching of the posterior tibial tendon in the foot. The key function of the posterior tibial tendon is to support the arch in the foot. The tendon serves as a major supporting structure to assist the foot function while walking - however, if PTTD is present than the result is oftentimes an “adult-acquired flatfoot.”
Generally, adult-acquired flat-foot occurs only in one foot, but can be seen in both. This ailment is generally progressive, so if left untreated, the symptoms will continue to get worse. Symptoms generally occur after an activity that requires the use of the tendon such as running, walking, hiking or climbing stairs.
PTTD will change as the condition worsens, but initially include:
- Flattening of the arch
- An inward roll of the ankle