Improved unilateral group | Unilateral group | Bilateral group | |
---|---|---|---|
No. of patients | 135 | 211 | 101 |
No. of vertebral bodies (units) | 148 | 229 | 122 |
Sex(male/female) | 28/107 | 65/146 | 25/76 |
Age | 76.8 ± 7.5 | 76.7 ± 6.9 | 75.8 ± 7.5 |
Bone density (t value) | − 3.05 ± 0.57 | − 3.15 ± 0.64 | − 3.00 ± 0.78 |
Surgery duration/min | 33.5 ± 10.3 | 22.4 ± 8.0** | 35.3 ± 12.1 |
Intraoperative bone cement amount/ml | 5.6 ± 1.3 | 4.2 ± 1.2** | 5.5 ± 1.0 |
VAS | |||
Preoperative | 7.53 ± 1.18 | 7.13 ± 1.11 | 7.62 ± 1.07 |
Postoperative day 1 | 3.32 ± 0.84 (55.1 ± 12.2) | 3.21 ± 0.64 (54.2 ± 10.5) | 3.16 ± 0.84 (55.5 ± 12.3) |
Last follow-up | 2.32 ± 0.77 (68.3 ± 12.0) | 2.44 ± 0.85 (65.1 ± 11.2) | 2.33 ± 0.54 (68.6 ± 9.8) |
ODI score | |||
Preoperative | 34.7 ± 6.0 | 33.8 ± 6.5 | 35.1 ± 5.8 |
Postoperative day 1 | 13.6 ± 4.5 (60.1 ± 13.4) | 18.6 ± 4.1 (59.3 ± 11.7) | 17.7 ± 3.8 (60.5 ± 13.9) |
Last follow-up | 9.6 ± 4.1 (71.2 ± 13.7) | 17.1 ± 3.8 (72.4 ± 14.6) | 16.8 ± 3.6 (74.1 ± 10.9) |
Cobb’s Angle (Coronal) | |||
Preoperative | 2.2 ± 2.3 | 6.5 ± 3.2 | 2.4 ± 2.3 |
Postoperative day 1 | 1.7 ± 2.6 | 1.9 ± 2.5 | 2.1 ± 2.1 |
Last follow-up | 1.9 ± 2.5 | 2.0 ± 2.6 | 2.0 ± 2.0 |
Cobb’s Angle (Sagittal) | |||
Preoperative | 17.6 ± 2.1 | 17.4 ± 2.7 | 17.1 ± 2.2 |
Postoperative day 1 | 9.6 ± 2.3 (46.2 ± 7.3) | 9.8 ± 3.4 (45.0 ± 14.1) | 9.2 ± 2.5 (46.7 ± 8.3) |
Last follow-up | 10.4 ± 2.5 (41.2 ± 8.4) | 10.5 ± 3.3 (40.4 ± 13.8) | 10.1 ± 2.8 (41.5 ± 11.8) |
Vertebral height/mm | |||
Preoperative | 17.3 ± 1.8 | 17.6 ± 2.9 | 17.5 ± 2.2 |
Postoperative | 19.3 ± 1.9 (11.7 ± 5.0) | 19.2 ± 2.2 (11.8 ± 5.0) | 19.5 ± 2.3 (11.6 ± 4.9) |
Last follow-up | 18.6 ± 2.0 (7.3 ± 6.9) | 18.4 ± 2.4 (7.0 ± 6.5) | 19.2 ± 2.1 (9.7 ± 3.2) |
Bone cement Leakage/ per vertebra | 24 (16.2%) | 65 (28.4%)** | 19 (15.6%) |