Fig. 1From: Biomechanical investigation of a minimally invasive posterior spine stabilization system in comparison to the Universal Spinal System (USS)Solid rigid polyurethane foam bars instrumented with USS (screw: diameter 6.2 mm, length 50 mm; longitudinal rod: diameter 6 mm, length 70 mm). Left (a) lateral view; right (b) posterior viewBack to article page