Posterior Tibial Tendon Dysfunction

PTTD, or posterior tibial tendon dysfunction, is the compromise of the posterior tibial tendon and a complex group of ligamentous structures which support the arch, resulting in severe foot collapse. The posterior tibial tendon has been thought to be the main structure supporting the arch. In the past, the blame for an acquired flatfoot rested solely on the posterior tibial tendon. It was generally accepted that failure or rupture of the tendon resulted in foot collapse. But, now it is known that the posterior tibial tendon is not the only structure involved in the progressive collapse of the arch in the acquired flatfoot.

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