Surgical outcomes of anterior column reconstruction for spinal fractures caused by minor trauma-preoperative examination of the number of intervertebral bone bridges is key to obtaining good bone fusion-

Table 4 Characteristics of the maxVB = 0 and maxVB ≥ 2 groups adjusted for the confounding factor of postoperative back pain score

Characteristics	OR	95% CI	p value
maxVB = 0	—	—
maxVB ≥ 2	19.1	5.27–87.7	< 0.001**
Age	0.94	0.85–1.02	0.14
Smoking history	0.98	0.14–7.37	> 0.9
DM history	0.53	0.11–2.28	0.4
Femur proximal BMD (g/cm²)	2.25	0.00–26.6	0.9
Osteoporosis drugs
None	—	—
Bone formation stimulants	0.39	0.08–1.80	0.2
Bone resorption inhibitors	1.03	0.12–9.70	> 0.9
Others	0.62	0.01–12.1	0.8
Surgical techniques
Unilateral side screw fixation	—	—
Pedicle screw	0.99	0.18–5.43	> 0.9
Number of fixed vertebrae	1.11	0.61–1.96	0.7
Materials used for the anterior props
Iliac bone	—	—
Expandable cage	1.9	0.30–12.5	0.5

P values < 0.05* and < 0.001** were considered to indicate statistical significance
Abbreviations
DM, diabetes mellitus; BMD, bone mineral density; maxVB, maximum number of vertebral bodies that are bony cross-linked with contiguous adjacent vertebrae; CI, confidence interval

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