Table 1.
Baseline characteristics of the patients
| Characteristics | Total | Non-PJD | PJD | P |
|---|---|---|---|---|
| n | 308 | 282 | 10 (8 PJF, 2 PJK) | NA |
| Age at surgery (years), mean±SD | 63.8±6.2 | 63.5±6.06 | 67.5±4.04 | 0.002* |
| Gender (female) | 160 | 165 | 8 | 0.04* |
| DM (yes n) | 28 | 26 | 0 | 0.27 |
| CCI (n), mean±SD | 2.57±3.6 | 2.5±1.45 | 3±1.9 | 0.15 |
| ASA score (n), mean±SD | 2.03±0.6 | 2.03±0.58 | 2±0.74 | 0.91 |
| BMI (n), mean±SD | 26.5±6.2 | 26.6±3.7 | 27.1±5.7 | 0.98 |
| Smoking (yes n) | 74 | 66 | 2 | 0.21 |
| Length of stay (day), mean±SD | 11.1±12.7 | 11.2±13.1 | 11.5±4.04 | 0.32 |
| Operative time (min), mean±SD | 193.3±59 | 196±59.1 | 165±52 | 0.30 |
| PLVI, mean±SD | 0.71±0.18 | 0.72±0.19 | 0.6±0.23 | 0.23 |
| PLVI (low n) | 153 | 130 | 4 | 0.03* |
| M-score, mean±SD | 0±128 | −0.91±0.15 | −0.92±0.006 | 0.04* |
| PJD, n (%) | 10 (3.2) |
*Statistically significant, NA - Not applicable, SD - Standard deviation, PJD - Proximal junctional disease, PVLI - Psoas lumbar vertebral index, ASA - American Society of Anesthesiology, CCI - Charlson Comorbidity Index, BMI - Body mass index, DM - Diabetes mellitus, PJK - Proximal junctional kyphosis, PJD - Proximal junctional failure