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Prediction of postoperative proximal junctional kyphosis/failure in adult degenerative scoliosis via magnetic resonance imaging-based vertebral bone quality, computed tomography-based Hounsfield units, and sagittal vertical axis

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Retrospective analysis indicates vertebral bone quality and Hounsfield units may predict proximal junctional kyphosis and failure post-surgery.

The study shows that vertebral bone quality is significantly linked to proximal junctional kyphosis after surgery.
A risk assessment model yielded an area under the curve score of 0.876 for predicting PJK/PJF in adult degenerative scoliosis patients.
Using multivariate logistic regression, the model identified strong associations with PJK/PJF based on imaging features.
Integrating imaging data for vertebral bone quality, Hounsfield units, and sagittal vertical axis improves predictive accuracy for surgical outcomes.

Geng et al. (2025) studied this question.

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Retrospective analysis indicates vertebral bone quality and Hounsfield units may predict proximal junctional kyphosis and failure post-surgery.