Influence of Different Surgical Timing after Percutaneous Kyphoplasty for Osteoporotic Vertebral Compression Fractures: A Retrospective Study

Table 2

Comparison of compression rates of AVH (%) between the three groups.

Group	Cases	Preoperation	1 day after operation	1 month after operation	6 months after operation
A	52	15.25 ± 10.42	10.62 ± 4.69	10.15 ± 5.42	10.59 ± 4.84
B	50	17.24 ± 7.54	10.28 ± 5.58	9.89 ± 4.54	10.38 ± 3.50
C	47	14.34 ± 9.15	12.91 ± 5.85	12.49 ± 4.78	12.60 ± 4.42
value		0.278	0.036	0.020	0.022

value indicates statistical significance ().