Posterior Tibial Tendonitis Posterior tibial tendon dysfunction (PTTD) is an overstretching of the posterior tibial tendon in the foot which generally occurs after long term overuse related inflammation and degeneration of the tendon, Posterior Tibial Tendonitis/tendonosis. Tibialis posterior muscle/tendon has a major role in supporting the medial arch of the foot and therefore its … Continue reading Posterior Tibial Tendonitis