It is usually due to instability of the joint connecting the foot to the heel (subtalar).
It can be because of repetitive motions or traumatic injuries, especially chronic (persistent)ankle sprains.
Symptoms
The most common symptom is tenderness of the sinus tarsi area of the foot.
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This will affect more of the lateral ligaments and tendons, including the sinus tarsi.
This can result in sinus tarsi syndrome.
Although conservative treatment is often successful, surgical intervention is required in some instances of STS.
Podiatry Today.Keys to patient education and accurate diagnosis of sinus tarsi syndrome.
Helgeson K.Examination and intervention for sinus tarsi syndrome.N Am J Sports Phys Ther.
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American Academy of Podiatric Sports Medicine.Sinus tarsi syndrome.
