Arthroscopy of the posterior subtalar joint.

The subtalar joint is a complex and functionally important joint of the lower extremity. It plays a major role in the movement of inversion and eversion of the foot. With the development of small-joint arthroscopes and instrumentation, surgeons became interested in posterior subtalar joint arthroscopy. Diagnostic and therapeutic indications for this technique have increased; however, arthroscopic subtalar surgery is technically difficult and should be performed by an experienced arthroscopist. The number of reports dealing with posterior subtalar arthroscopy remains relatively small.