Indications CONTUS-compression screws and -position bolts for the treatment of arthrodesis of middle and hind foot, osteotomies and fractures. › arthrodesis of the upper ankle joint › arthrodesis of the lower ankle joint › double-triple-arthrodesis › correction in Charcot-osteoarthropathy › fixation of the medial pillar (metatarso-tarso-talar) Characteristics › screw diameter 7.5 mm, head diameter 8.5 mm, cannulation Ø 2.7 mm › both compression screw threads with different running thread pitch lead to split compression › with all round self-tapping and self-drilling › easy screwing › good anchorage › precise introduction of guide wire Ø 2.5 mm