“Sandwich” osteotomy technique on 1st phalanx of the great toe in the surgical cure of the hallux valgus

Abstract: The sandwich operation in the surgical cure of the hallux valgus is an original technique. This evolution sprang from the limitations of the Petersen operation. It consists in a conservative arthroplasty of the 1st phalanx of the great toe combined with the Petersen technique. It allows three spatial modifications of the great toe deformity: a shortening, a rotation and a varisation.