Table 1 Characteristics of the study patients
Characteristics | Preoperative | Postoperative (1 month) | Postoperative (12 months) | p-value |
|---|---|---|---|---|
Overall, n | 64 | |||
Female sex, n (%) | 58 (90.6) | |||
Age, mean ± SD, year | 50.9 ± 14.4 | |||
Surgical type, n (%) | ||||
TAF | 33 (51.6) | |||
C1LM-C2P screw fixation | 31 (48.4) | |||
Surgical side, n (%) | ||||
Right | 14 (21.9) | |||
Left | 19 (29.7) | |||
Both | 31 (48.4) | |||
BMI, mean ± SD, kg/m2 | 22.2 ± 2.8 | |||
Preoperative myelopathy, n (%) | 10 (15.6) | |||
DAS28, mean ± SD | 3.6 ± 0.8 | |||
ADI, mean ± SD, mm | 8.0 ± 1.8 | 2.4 ± 0.7 | 2.3 ± 0.5 | < 0.001 |
ADI, median (IQR), mm | 8.15 (7.06–9.12) | 2.42 (1.95–3.00) | 2.42 (1.90–2.78) | < 0.001 |
Oc-C2 angle, mean ± SD | 26.5 ± 9.5 | 29.4 ± 7.1 | 30.8 ± 7.1 | 0.010 |
C2-C7 angle, mean ± SD | 13.3 ± 8.1 | 11.0 ± 5.5 | 12.7 ± 6.7 | 0.157 |
T1 slope, mean ± SD | 18.8 ± 7.2 | 17.1 ± 6.4 | 18.3 ± 6.9 | 0.368 |
cSVA (C2-C7), mean ± SD, mm | 15.5 ± 8.9 | 13.2 ± 7.2 | 12.6 ± 7.5 | 0.087 |
VAS score, median (IQR) | 8 (8–9) | 3 (2–3) | 2 (1–2) | < 0.001 |