Vacuum phenomenon as a predictor of kyphosis after implant removal following posterior pedicle screw fixation without fusion for thoracolumbar burst fracture: a single-center retrospective study

Table 3 Final kyphotic deformity

	Final kyphotic deformity		OR	95% CI	P value
	(+); n = 17	(−); n = 42	OR	95% CI	P value
Old age	3	2	8.6	0.9–85.2	0.07
Female	5	26	0.3	0.1–1.1	0.06
Initial severe kyphosis	10	29	0.6	0.1–3.0	0.56
Severe wedge deformity	5	8	4.0	0.7–21.6	0.11
Vacuum phenomenon	11	18	7.2	1.5–34.7	0.01

ISSN: 1471-2474