Adult Acquired Flatfoot Deformity (AFFD) / Posterior Tibial Tendon Dysfunction (PTTD)

Posterior tibial tendon dysfunction (PTTD) is often called adult acquired flatfoot deformity (AAFD) as it is the most common type of flatfoot developed by adults. This condition is caused by changes in the posterior tibial tendon that impair its ability to support the arch, thus resulting in flattening of the foot. Symptoms can include pain, swelling, a flattening of the arch, and an inward rolling of the ankle. Symptoms will change and intensify as the condition progresses. Nonsurgical treatment options include orthotic devices or bracing, immobilization, EPAT, physical therapy, laser therapy, nonsteroidal anti-inflammatory drugs (NSAIDs), and shoe modifications.

“The anatomy of the foot and ankle are complex; as such, adult acquired flatfoot deformity is a debilitating condition that affects up to 5 million people in the US.”