This technique proposed by Pisani in 1981 is a modification of the Miralles Marrero technique for the reconstruction of the interosseous ligament in the treatment of chronic subastragalar laxity. An S shaped incision behind and below che lateral malleolus is prolonged distally to the tarsus up to the base of the 5th metatarsal. This is followed by paraligamentous drainage of the tarsal sinus and the baring of the neck of the astragalus and the lateral wall of the anterior process of the calcaneus as far as the floor of the sinus. The tendon of the peroneous brevis is split longitudinally up to the myoentesic junction and the anterior half of the tendon is sectioned proximally without damaging the insertion. A perforation is used to prepare a first tunnel through the calcaneus starting from the lateral wall and exiting in the floor itself. A second curved tunnel is made in the neck of the astragalus running from the base to the lateral wall. The peroneus brevis tendon is passed through the first and then the second tunnel keeping the astragalus and calcaneus in line. The tendon exits laterally to the neck of the astragalus and is taken to the tarsal sinus where it is secured. Immobilisation in plaster cast for 35 days; functional rehabilitation; free load about four weeks after removal of the cast.