Arthroscopic Management of Sinus Tarsi Syndrome.

Sinus tarsi syndrome (STS) is a clinical entity characterized by pain of the lateral hindfoot and a sense of instability especially on uneven surfaces due to chronic inflammation characterized by fibrotic tissue remnants and synovitis of the sinus tarsi, associated with both traumatic and nontraumatic causes. Arthroscopic debridement of the subtalar joint is an effective and safe alternative in the treatment of STS refractory to conservative treatment. The purpose of this Technical Note is to report the details of arthroscopic management of STS.