Research Article

A Nomogram for Predicting the Residual Back Pain after Percutaneous Vertebroplasty for Osteoporotic Vertebral Compression Fractures

Figure 7

Distribution characteristics of spongy bone cement. (a) Anteroposterior X-ray film of diffuse distribution pattern in the spongy group. (b) Lateral X-ray film of diffuse distribution pattern in the spongy group.