Fig. 2

A–H A 83-year-old female patient with Kümmell’s disease at L1 in PMCP group: A Lateral radiograph before surgery; B, C Intravertebral vacuum sign shown in sagittal and axial computed tomography (CT) images before surgery; D A high signal intensity in the location of the cleft shown in sagittal T2-weighted MRI image before surgery; E Lateral radiograph after surgery; F–H Good cement distribution without leakage was shown in sagittal, coronal, and axial CT images after surgery