Causes of Sinus Tarsi Syndrome - Pain Free Physiotherapy Clinic

What is Sinus Tarsi A small bony canal that is present between

the talus and the calcaneum is called Sinus Tarsi. It contains structures that contribute to the stability and Proprioception of the Joint.

Damage to the sinus tarsi can be caused by Overuse or an Ankle sprain.

What are the causes of Sinus Tarsi Syndrome?

Sinus tarsi syndrome mostly occurs after a lateral Ankle sprain or recurrent Ankle sprains which consequently results in injuries of the

interosseous and cervical ligaments present in the Sinus Tarsi.

As a result of injury to sinus tarsi ligaments, an inflammation of the synovial recess in the sinus tarsi occurs. This happens in 70% of the cases of recurrent lateral ankle sprain cases.

Symptoms It is difficult to pinpoint the exact location of the pain by the patient. The usual area of pain is on the outer aspect of the ankle near the lateral

malleolus. Tenderness can be elicited at the sinus tarsi opening near the outer side of the ankle.

The sinus tarsi syndrome can also occur as a compression injury in patients with

people flat feet.

The talus and calcaneum are pressed together as a result of the deformation.

This causes the bone-to-bone contact of the talus and calcaneum, with

inflammation or arthritis in the sinus.

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