Comparison of Percutaneous Kyphoplasty with or without Pedicle Screw Fixation in Osteoporotic Thoracolumbar Vertebral Fractures: A Retrospective Study

Table 3

Comparison of AVHr and CA between the two groups.

Variable	PKP group ()		PKPF group ()
AVHr (%)
Preoperative					0.73
1 month		<0.001		<0.001	0.02
6 months		0.24		0.15	0.03
12 months		0.04		0.67	0.01
24 months		0.36		0.82	0.02
CA (degree)
Preoperative					0.57
1 month		<0.001		<0.001	0.02
6 months		0.03		0.23	0.01
12 months		0.72		0.42	0.03
24 months		0.82		0.38	0.02

; : the comparison between two groups; : the comparison with last follow-up; AVHr: anterior vertebra height; CA: Cobb angle.