<Li> Synthes matrixrib fixation system has two options: a precontoured metal plate that uses screws to secure the plate to the rib; and / or an intramedullary splint which is tunneled into the rib and secured with a set screw . </Li> <Li> Anterior locking plates are metal plates that have holes for screws throughout the plate . The plate is positioned over the rib and screwed into the bone at the desired position . The plates may be bent to match the contour of the section . </Li> <Li> U-plates can also be used as they clamp on to the superior aspect of the ribs using locking screws . </Li>

Where is the 6th and 7th rib located