Two years post fusion surgery, patient reported severe back pain. VAS score: 9.

L5 right pedicle showed a halo effect and toggling, indicating bony erosion around the screw and loosening of the screw.

Revision with XPED Pedicle Screw System included 4 standard screws in L3-L4 and two expandable screws in L5.
XPED screw deployed in L5 right pedicle expanded into the open volume inside the vertebra for achieving secure anchoring
with no additional augmentation.
XPED expandable screw in L5 left pedicle was minimally deployed, due to the norml bone density of the bone tissue.

6 weeks after the revision surgery, back pain was eliminated, VAS score was 0.