Predictive risk factors for recollapse of cemented vertebrae after percutaneous vertebroplasty: A meta-analysis

Figure 1 Flow diagram of literature search. PKP: Percutaneous kyphoplasty.

Figure 2 Forest plots of meta-analysis for age, gender (female), lumbar bone mineral density, fractures located at the thoracolumbar junction, preoperative intravertebral cleft, preoperative visual analogue scale scores, injected cement volume, intradiscal cement leakage, cement distribution pattern, and vertebral height restoration. A: Age; B: Gender (female); C: Lumbar bone mineral density; D: Fractures located at the thoracolumbar junction; E: Preoperative intravertebral cleft; F: Preoperative visual analogue scale scores; G: Injected cement volume; H: Intradiscal cement leakage; I: Cement distribution pattern; J: Vertebral height restoration. CI: Confidence interval; SD: Standard deviation.