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Radiographic evidence of screw loosening.

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Presentation on theme: "Radiographic evidence of screw loosening."— Presentation transcript:

1 Radiographic evidence of screw loosening.
Radiographic evidence of screw loosening. The “halo” around the L4 and L5 screws in the vertebral body and pedicle should be noted. This patient also presented with a pseudarthrosis of the L5-S1 interspace at 4 years postoperatively and underwent revision to an L4-S1 fusion and repair of the pseudarthrosis. William R. S. Hudson et al. Int J Spine Surg 2011;5:36-43 © 2011 SAS - The International Society for the Advancement of Spine Surgery. Published by Elsevier Inc. All rights reserved.

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