Medial approach to the subtalar joint: anatomy, indications, technique tips.

The medial approach to the subtalar joint allows good visualization of the articular surfaces. Compared with the lateral approach, advantages are found particularly in flatfoot correction, in which the single-incision technique can be used for corrective fusions of rigid flatfoot deformity. Union rates are comparable with the traditional lateral approach; however, wound healing problems occur less frequently. Avascular necrosis of the talus is a rare but serious complication, although frequency seems to be independent of the approach chosen. Clinical studies showed no increased morbidity when comparing the medial to the lateral approach.