The comparison of percutaneous kyphoplasty and vertebroplasty for the management of stage III Kummell disease without neurological symptoms

Table 4 Clinical and radiographic data

Variable	PKP group	PVP group	P value
Vertebral body height ratios improvement (%)^a
Anterior	35.1 ± 10.2	16.2 ± 9.4	< 0.001
Middle	41.8 ± 11.3	22.4 ± 9.0	< 0.001
Posterior	8.0 ± 8.6	5.6 ± 4.7	0.273
Cobb’s angle improvement	10.0 ± 4.3	3.5 ± 2.1	< 0.001
VWR improvement (%)^b	30.0 ± 10.6	12.7 ± 12.0	< 0.001
Cement leakage, number	3	9	0.025
Adjacent vertebral fractures, number	1	1	0.972

^aVertebral body height ratio (%) = (fractured vertebral body height/normal vertebral body height) × 100%
^bVWR, Vertebral wedge ratio (%) = (fractured vertebral body anterior height/fractured vertebral body posterior height) × 100%

ISSN: 1471-2482