The arthrodesis procedure is most often performed in patients who suffer from pain associated with advanced degenerative changes of the ankle joint. The condition for qualification is the lack of effects of conservative treatment or the lack of purposefulness of undertaking other methods of surgical treatment. Stiffening of the ankle joint is also performed in extensive post-traumatic conditions involving the ankle joint. In addition, arthrodesis can be used as a method of correcting foot deformities, such as fixed flatfoot or clubfoot in adults.