Purpose
This study aimed to evaluate whether percutaneous vertebroplasty (PVP) contributes to vertebral height restoration and sagittal alignment correction in osteoporotic vertebral compression fractures (OVCF), focusing on thoracolumbar junction fractures.
Methods
A retrospective review of 40 patients with single-level OVCF at T10–L2 treated with PVP was performed. Vertebral heights (anterior, middle, and posterior) and sagittal alignment (thoracic kyphosis, lumbar lordosis, sagittal vertical axis, and segmental Cobb's angle) were measured preoperatively, at 3 months, and at 6 months. Clinical outcomes included visual analog scale and EuroQol-5 Dimensions.
Results
Significant pain relief and improvement in quality of life were observed at 6 months postoperatively. Vertebral height restoration, particularly in the anterior and middle portions, was noted at 3 months; however, partial loss of the restored height occurred by 6 months. Most sagittal alignment parameters showed no significant postoperative change, although lumbar lordosis significantly increased, resulting in a reduced pelvic incidence–lumbar lordosis mismatch.
Conclusion
PVP provides meaningful clinical improvement in thoracolumbar OVCFs and offers early vertebral height restoration; however, this radiologic benefit is not sustained over time. While limited improvement in lumbar lordosis was observed, PVP does not substantially correct global sagittal alignment. These findings suggest that PVP should be considered primarily a pain-relieving and stabilizing procedure rather than a deformity-correcting intervention.

Purpose
This study was conducted to identify risk factors predicting the loss of cervical lordosis (LCL) in patients with multilevel ossification of the posterior longitudinal ligament (OPLL) following laminoplasty. Material and Methods: We conducted a retrospective analysis of data from patients who underwent laminoplasty at Chonnam National University Hospital between January 2013 and December 2022. Various radiological parameters and clinical outcome measures were collected perioperatively. Patients were divided into 2 groups according to the severity of LCL. We examined preoperative radiological parameters associated with LCL.
Results
We analyzed data from 109 patients (92 men and 17 women; mean age, 60.31±10.80 years). A higher T1 slope (odds ratio [OR], 1.420; p<0.001) and a lower extension ratio (OR, 0.883; p=0.019) were associated with a higher risk of LCL. T1 slope was shown to be an excellent predictor of LCL, with a cut-off value of 28° (p<0.001, area under the curve=0.918). Also, The T1 slope and extension ratio were statistically significant correlated with clinical outcomes.
Conclusions
T1 slope and extension ratio were significantly associated with LCL in patients with multilevel OPLL following laminoplasty. The cut-off value for the T1 slope was 28°, and the cut-off value for the extension ratio was 33. Therefore, in multilevel OPLL patients with a T1 slope exceeding 28° or an extension ratio below 33, a warning regarding the potential LCL should be given before performing cervical laminoplasty.