Posterior tibial tendon dysfunction: causes, symptoms and treatment

Posterior tibial tendon dysfunction (PTTD) is a condition that results from the gradual deterioration or overuse of the posterior tibial tendon. This tendon runs along the inside of the ankle and foot, connecting the calf muscle to the bones in the middle of the foot.

PTTD can cause pain and swelling in the foot, and it may make walking difficult. It is a progressive condition that can lead to a flat foot deformity if left untreated. In certain situations, if the condition is not arrested, it can lead to a catastrophic collapse of the foot.

Causes – The exact cause of PTTD is believed to be associated with repeated strain on the posterior tibial tendon. This can happen from activities that involve a lot of running, jumping or walking on hard surfaces often associated with a flat foot. Obesity, diabetes, and high blood pressure may also increase the risk of developing PTTD.

Symptoms – Symptoms of PTTD often start with pain and swelling on the inside of the foot, just below the ankle. Over time, the arch of the foot may begin to collapse, causing a flatfoot deformity. This can lead to more pain and difficulty walking. In severe cases, the ankle may turn inward, and the foot may turn outward, making it challenging to walk or stand without support.

Treatment – Treatment for PTTD typically depends on the severity of the condition:

  • Mild cases may be managed with rest, ice, anti-inflammatory medication and insoles. Physical therapy, shockwave therapy and orthotics may also be recommended to protect and strengthen the muscles in the foot and ankle area and provide support to the arch.
  • In more severe cases, braces or even surgery may be necessary to repair or replace the damaged tendon and stabilise the joints.


Early diagnosis and treatment are essential to prevent the progression of PTTD and reduce the risk of complications.

Our podiatrists at Sydney’s Bio Podiatry are trained to identify and treat PTTD to ensure pain relief and return to activities.

Read more articles about foot and ankle conditions

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