En Bloc Vertebral Body Derotation with the
EXPEDIUM VERSE System
Facilitators must be applied to levels requiring derotation
following the locking of the polyaxial heads.
If application of a pull force is desired, Quick Sticks can be
attached to the contralateral levels. An assistant pushes
down on the convex ribs and the convex screws, while the
concave levels are rotated in the direction that will reduce
the rib prominence.
3,8
Application of these push-pull forces
must be done simultaneously to distribute stress at the
bone-screw interface. The rotation of the concave screws
will help decrease the torsion and will lift the concavity out
of the chest.
Derotation will bring the concave pedicle screw up to
the rod. Reduction of the set screw at this time will
retain the achieved derotation. This process must be
repeated until the desired degree of derotation is
achieved and the rod of the concave pedicles has been
fully reduced.
In addition, using the EXPEDIUM Derotation Frame
(2797-88-955) (Not in set) multiple Quick Sticks can be
linked together and rotated in unison.
FIGURE 49
FIGURE 50
DePuy Synthes Companies
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EXPEDIUM VERSE System
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System Guide
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Summary of Contents for EXPEDIUM VERSE
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