Table 2 Characteristics of patients who underwent anterior strut reconstruction in the maxVB = 0 and maxVB ≥ 2 groups
Characteristics | maxVB = 0 group, n = 46 | maxVB ≥ 2 group, n = 35 | p value |
|---|---|---|---|
Age | 76 (8) | 76 (10) | 0.5 |
Sex | Â | Â | 0.15 |
Male | 11 (24%) | 14 (40%) | Â |
Female | 35 (76%) | 21 (60%) | Â |
Smoking history | Â | Â | 0.9 |
No | 41 (89%) | 31 (89%) | Â |
Yes | 5 (11%) | 4 (11%) | Â |
DM history | Â | Â | 0.4 |
No | 36 (78%) | 24 (69%) | Â |
Yes | 10 (22%) | 11 (31%) | Â |
Femur proximal BMD (g/cm2) | 0.52 (0.08) | 0.56 (0.07) | 0.051 |
maxVB | 0 (0) | 7.3 (4.1) | < 0.001** |
Osteoporosis drugs | Â | Â | 0.2 |
None | 16 (35%) | 16 (46%) | Â |
Bone formation stimulants | 23 (50%) | 12 (34%) | Â |
Bone resorption inhibitors | 4 (8.7%) | 7 (20%) | Â |
Others | 3 (6.5%) | 0 (0%) | Â |
Surgical techniques | Â | Â | 0.3 |
Unilateral side screw fixation | 24 (52%) | 13 (37%) | Â |
Pedicle screw | 22 (48%) | 22 (63%) | Â |
Number of fixed vertebrae | 2.98 (1.44) | 3.51 (1.56) | 0.092 |
Materials used for the anterior props | Â | Â | 0.4 |
Iliac bone | 40 | 32 | Â |
Expandable cage | 6 | 3 | Â |
Surgical duration (min) | 253 (86) | 261 (94) | 0.8 |
Volume of blood loss (ml) | 458 (423) | 386 (277) | > 0.9 |
Postoperative bone union |  |  | < 0.001** |
None | 19 (41%) | 1 (2.9%) | Â |
Unilateral | 14 (30%) | 5 (14%) | Â |
Bilateral | 13 (28%) | 29 (83%) | Â |
Barthel Index | 86 (7) | 91 (7) | < 0.001** |
Postoperative back pain score | 1.5 (1) | 2.3 (0.85) | < 0.001** |
Preoperative local angle (°) | −13 (13) | −2 (14) | < 0.001** |
Postoperative local angle (°) | −7 (11) | 0 (14) | 0.02* |
Postoperative local angle at 6 months (°) | −16 (16) | −5 (14) | 0.003** |
Corrective angle | 6 (11) | 2 (8) | 0.056 |
Loss of the correction angle (°) | 9 (10) | 4 (5) | 0.075 |
Mean (SD), n (%) | Â | Â | Â |
Wilcoxon rank-sum test and Fisher’s exact test |  |  |  |