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Preoperative Cervical Vertebral Bone Quality Score as a Predictor of Adjacent Segment Degeneration After Anterior Cervical Discectomy and Fusion: A Retrospective Study
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DOI：10.1016/j.wneu.2026.124892.png)
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Abstract
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OBJECTIVE: To evaluate the predictive efficacy of the preoperative Cervical Vertebral Bone Quality (C-VBQ) score for adjacent segment degeneration (ASD) following anterior cervical discectomy and fusion (ACDF). METHODS: This single-center retrospective study included patients with degenerative cervical spine disease who underwent ACDF (2019-2023). All patients had >= 24 months of clinical and radiological follow-up. Demographic, surgical, and radiological data were collected. Simple linear regression assessed correlations between baseline characteristics and C-VBQ score. C-VBQ score's predictive performance was evaluated via receiver operating characteristic curve analysis; multivariate logistic regression identified independent risk factors for ASD. RESULTS: A total of 121 patients met the inclusion criteria (mean age: 53 +/- 9 years; female proportion: 56.2%). Among these patients, 63 (52.1%) developed radiographic ASD, and 19 (15.7%) developed symptomatic ASD. A higher C-VBQ score was a significant predictor of radiographic ASD in univariate analysis (2.5 [2.2; 2.9] vs. 1.2 [0.9; 1.7]; P < 0.001) and multivariate analysis (odds ratio: 10.240, 95% confidence interval [CI]: 4.052-25.882; P < 0.001). For symptomatic ASD, a significantly higher C-VBQ score was seen in univariate analysis (2.7 [2.6; 2.9] vs. 2.0 [1.3; 2.7]; 95% CI: 1.354-6.067; P < 0.001) and served as an independent risk factor in multivariate analysis (odds ratio: 2.866, 95% CI: 1.354-6.607; P = 0.006). Additionally, age correlated positively with C-VBQ score (P = 0.035). CONCLUSIONS: C-VBQ score effectively predicts ASD after ACDF, particularly radiographic ASD. Additionally, higher C-VBQ score is a significant independent risk factor for ASD.
Keywords:
Adjacent segment degeneration
Anterior cervical discectomy and fusion
Cervical Vertebral Bone Quality score
Magnetic resonance imaging
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