Table 4.

Pre- and post-procedural radiographic parameters in the 25 patients with DND who achieved CMI

Radiographic parameters	Pre-PVP	Post-PVP (1 month)	Final follow up (24 months)
Local kyphotic angle (°)	16.4 ± 8.1	6.5 ± 9.3	13.8 ± 13.2
Percent spinal canal compromise (%)	32.4 ± 11.9	31.9 ± 10.5	35.5 ± 9.8
Intravertebral instability (°)†	9.6 ± 4.0	2.6 ± 2.2	3.7 ± 2.2

Plus-minus values are means ± 1SD. There were no significant differences in local kyphotic angle and percent spinal canal compromise between pre- and post-PVP (by the Student’s t test)

DND delayed neurologic deficit, CM clinically meaningful improvement, PVP percutaneous vertebroplasty

^†P < 0.001 for comparison between pre- and post-PVP