Table 5 Demographic and postoperative complications in the study groups after propensity score matching
PD+ group | PD− group | p-value | |
|---|---|---|---|
Cases, n | 24 | 24 | – |
Age at surgery (years) | 70.8 ± 6.5 | 70.6 ± 11.5 | 0.95 |
Sex (male/female), m | 5/19 | 3/21 | 0.70 |
BMI | 23.2 ± 4.1 | 24.0 ± 4.1 | 0.49 |
BMD (T-score) | −1.7 ± 1.2 | − 2.0 ± 0.75 | 0.55 |
Number of fixed levels | 9.0 ± 2.4 | 9.0 ± 2.0 | 0.95 |
3CO (yes/no) | 7/17 | 11/13 | 0.37 |
Fix to sacrum (yes/no) | 24/0 | 24/0 | – |
Pre SVA (mm) | 185.7 ± 62.4 | 182.9 ± 76.9 | 0.89 |
Pre LL (°) | 0.04 ± 21.8 | −1.0 ± 20.0 | 0.86 |
Mechanical complication (yes/no) | 14/10 (58.3%) | 11/13 (45.8%) | 0.38 |
Rod failure (yes/no) | 6/18 (25.0%) | 4/20 (16.7%) | 0.48 |
Non-union | 10/14 (41.7%) | 4/20 (16.7%) | 0.059 |
PJK (yes/no) | 7/17 (29.2%) | 9/15 (37.5%) | 0.54 |
DJK (yes/no) | 2/22 (8.3%) | 0/24 (0%) | 0.15 |
Vertebral fracture (yes/no) | 6/18 (25.0%) | 8/16 (33.3%) | 0.53 |
Revision (yes/no) | 8/16 (33.3%) | 3/21 (12.5%) | 0.086 |
Post SVA (mm) | 50.0 ± 46.5 | 48.3 ± 42.8 | 0.89 |
Post LL (°) | 41.7 ± 10.2 | 41.9 ± 12.1 | 0.95 |
Final SVA (mm) | 89.9 ± 62.2 | 65.6 ± 46.9 | 0.13 |
Final LL (°) | 39.4 ± 12.1 | 38.3 ± 14.2 | 0.95 |
SVA correction loss (mm) | 39.8 ± 48.7 | 17.3 ± 38.8 | 0.08 |
LL correction loss (°) | −3.3 ± 20.8 | −3.5 ± 19.9 | 0.97 |