Article Figures & Data
Figures
- Figure
Representative cervical alignment radiographic parameters. SVA, sagittal vertical axis.
Tables
Variables All Patients
(n = 214)SVA <4 cm,
T1 <20°
(n = 28)SVA ≥4 cm
T1 ≥20°
(n = 47)SVA <4 cm
T1 ≥20°
(n = 139)P Age, y, mean ± SD (min-max) 63.5 ± 11.9
(20–86)58.5 ± 14.9
(20–79)64.8 ± 10.8
(40–84)64.1 ± 11.5
(30–86)>0.05 Gender Men 134 12 38 84 >0.05 Women 80 16 9 55 Follow-up, y, mean ± SD (min-max) 1.6 ± 1.3
(0.3–10.8)1.76 ± 1.5
(0.3–6.7)1.7 ± 1.2
(0.4–5.4)1.6 ± 1.3
(0.3–0.8)>0.05 SVA Preoperative 31.4 ± 13.9 20.2 ± 9.4 51.1 ± 9.0 27.0 ± 8.6 <0.01 6-wk PO 39.4 ± 16.0 27.4 ± 11.0 57.1 ± 17.3 36.4 ± 11.4 <0.01 Last PO 37.6 ± 15.5 26.1 ± 10.9 55.1 ± 16.4 34.0 ± 12.8 <0.01 P <0.01 0.01 0.26 <0.01 C2-C7 lordosis Preoperative 16.4 ± 11.5 7.9 ± 5.2 16.2 ± 11.1 18.2 ± 11.9 <0.01 6-wk PO 12.1 ± 9.6 11.6 ± 11.3 13.8 ± 9.6 11.7 ± 9.2 >0.05 Last PO 14.5 ± 10.7 10.4 ± 7.9 14.4 ± 10.0 15.3 ± 11.3 >0.05 P <0.01 0.12 0.12 <0.01 T1S Preoperative 31.2 ± 11.3 14.4 ± 5.3 39.4 ± 9.6 31.8 ± 9.0 <0.01 6-wk PO 28.1 ± 11.7 16.5 ± 7.9 34.7 ± 10.4 28.7 ± 10.8 <0.01 Last PO 30.3 ± 10.8 17.5 ± 7.1 37.1 ± 10.0 30.6 ± 9.3 <0.01 P 0.19 0.23 0.11 0.08 T1-(C2-C7 lordosis) Preoperative 14.8 ± 10.3 6.5 ± 7.7 22.2 ± 8.1 13.7 ± 9.6 <0.01 6-wk PO 16.0 ± 12.5 4.7 ± 13.3 20.9 ± 11.6 17.0 ± 11.0 <0.01 Last PO 15.9 ± 12.4 7.1 ± 9.1 22.7 ± 11.6 15.9 ± 12.4 <0.01 P 0.57 0.11 0.75 0.14 PO, postoperative; SVA, sagittal vertical axis; T1S, T1 slope.
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