Quantitative analysis of bone cement dispersion height and efficacy comparison in percutaneous vertebroplasty and percutaneous kyphoplasty

• Percutaneous kyphoplasty resulted in significantly higher bone cement dispersion heights in the anterior and middle vertebral columns and maximum dispersion height compared to percutaneous vertebroplasty. • Both procedures improved clinical outcomes (VAS, ODI, local kyphotic angle) at 6 months, with kyphoplasty showing superior improvements. • Anterior column and maximum bone cement dispersion heights were negatively correlated with Oswestry Disability Index at 6 months, suggesting higher dispersion is associated with better functional outcomes. • Bone cement dispersion height may serve as a potential imaging predictor for evaluating the efficacy of these minimally invasive procedures.