For has spondylodesis of the lumbar spine as well as pedicle screw and the counter support for use in the case of such a

摘要

For has spondylodesis of the lumbar spine witha) at least two anchoring elements which can be anchored in each case in a pedicle;b) for each anchoring element an associated fastening device for a repositioning instrument;c) at least one connecting rod extending between adjacent vertebrae; andd) for each anchoring element a which is affixed to said connecting means for the connecting rod;characterized in that it further comprises:e) for each anchoring element (12), a lengthening element (14), which have one end with the fixing device (26) of the anchoring element (12) and can be screwed on the other end of which the repositioning instrument (20) can be detachably fastened.