Tibialis Posterior Tendon Dysfunction

This condition refers to the overstretching of the tibialis posterior tendon. Acute (short term) injuries of this tendon are rare. It is mainly caused by chronic (long term) overuse of the tendon due to poor biomechanics that eventually leads to pain, inflammation and possible degeneration.

It is more often seen in middle-aged women and also dancers, particularly ballet dancers. They usually describe pain with a gradual onset, located along the arch and medial (inner) ankle. This muscle plays a vital role in maintaining the function of the foot arch. Therefore, if this tendon suffers injury, there is an increased risk that the arch will slowly collapse over some time. This can then lead to further injuries including ankle pain, heel spurs and plantar fasciitis.

As this condition can progress to tendon tears or complete rupture, intervention should be sought immediately. A diagnosis is usually made with a physical examination but ultrasound or MRI may be recommended if the level of severity suggests possible tear or rupture.