Vertebral Bone Quality Score as a Predictor of Pedicle Screw Loosening following Surgery for Degenerative Lumbar Disease.

The VBQ score was an influential factor associated with lumbar pedicle screw loosening, and a higher VBQ score was significantly correlated with a higher risk of screw loosening. The VBQ score was a better predictor of pedicle screw loosening than the HU value in patients who underwent pedicle screw fixation for degenerative lumbar disease.