Sinus Tarsi Syndrome

Dr Foot Podiatry, Foot Care & Health Care Podcast

The sinus tarsi is a tube or tunnel between the talus and the calcaneus bones. Sinus tarsi syndrome is pain or injury to this area. Traumatic injury to the ankle/foot (such as an ankle sprain) or overuse (such as repetitive standing or walking) are the main causes of this syndrome. It may also occur if the person has a pes planus or an over-pronated foot, which can cause compression in the sinus tarsi. Some characteristics are pain at the anterior lateral side of the ankle (anterior to the lateral mallelous) and a feeling of instability or difficulty walking on unstable surfaces.