Rod reducer assembly

A system for spinal surgery, comprising:

• a pedicle screw assembly including a screw securable to a spinal bone and a pedicle screw housing coupled to the screw, the pedicle screw housing defining a rod-receiving recess, the pedicle screw assembly including an extension assembly coupled to the pedicle screw housing by a frangible member;
• a derotation sleeve mountable to the pedicle screw assembly, the derotation sleeve movable with the pedicle screw assembly to manipulate the spinal bone, the derotation sleeve configured to inhibit the frangible member from breaking while manipulating the spinal bone, wherein the derotation sleeve includes a lock positionable between a locked position and an unlocked position, such that the derotation sleeve is secured to the pedicle screw assembly when the lock is in the locked position, and the derotation sleeve is separable from the pedicle screw assembly when the lock is in the unlocked position, wherein the derotation sleeve includes an upper shaft portion and a lower shaft portion coupled to the upper shaft portion, the upper shaft portion being movable relative to the lower shaft portion to position the lock between the locked and unlocked positions;
• and
• a rod reducer mountable to the derotation sleeve and configured to reduce a spinal rod into the rod-receiving recess of the pedicle screw housing.