Tibialis Posterior Muscle Dysfunction

Tibialis Posterior MD is a common sports injury that can lead to Acquired Flat Foot and foot pain in later life. The Tibialis Posterior tendon can become inflamed, partially torn or ruptured, causing pain behind the bony prominence on the inside of the ankle.

The function of the Tibialis Posterior muscle is to help the calf muscles push the foot down and also to turn the foot inwards. If a person has a heel that turns out at the bottom causing the foot to pronate excessively (roll inwards) then more strain is placed on the Tibialis Posterior tendon and it can become prone to injury.

If a problem with the Tibialis Posterior tendon is ignored, and a person carries on with sporting activities, it can lead to a complete rupture of the tendon which has to be surgically repaired.

It is therefore very important that this condition receives prompt treatment.

Tibialis Posterior Picture


If the Tibialis Posterior tendon and its surrounding sheath become inflamed there is pain on the inside of the ankle during movements, particularly pushing the foot downwards (plantar flexion) and turning the sole of the foot inwards (inversion).

The attachment of the Tibialis Posterior tendon can become painful to touch, as can the Tibialis Posterior tendon itself. This commonly occurs behind the bony lump on the inside of the ankle (the medial malleolus) and is often accompanied by swelling. In some cases this area will produce a creaking sound during movements.


Your podiatrist may recommend various therapies depending upon the stage of the injury. Medications and electrophysical agents may be utilized along with stretching and strengthening exercises. Appropriate footwear and orthotics may also be prescribed.