Table 2

Radiographic measurements on whole spine standing x-rays before and after surgery.

MeasurementMean (SD) (Range) P value
C7SVA, mm0.1
 Preoperative79.6 (63) (−43−254)
 Postoperative60 (51.8) (−26–217)
 ∆C7SVA−33.6 (57.9) (−166–60)
TK, ° 0.01
 Preoperative36.1 (15.4) (5–77)
 Postoperative43.8 (15) (21−91)
 ∆4.2 (15.3) (−35–39)
LL, ° 0.003
 Preoperative32.9 (15.9) (−14–78)
 Postoperative41.6 (12.4) (24–84)
 ∆9.3 (10.5) (−4–46)
T10-L2 sag Cobb, °0.8
 Preoperative3 (12.7) (−24–30)
 Postoperative2.3 (11.2) (−30–32)
 ∆−1 (9.4) (-21–32)
PI, °49 (10.7) (21–77)
PT, °0.7
 Preoperative21.1 (9.6) (−4–54)
 Postoperative21.8 (7.3) (2–34)
 ∆0.1 (10) (−28−26)
Degenerative scoliosisLeft convex 63%
Scoliotic apex level
 L11%
 L225%
 L2/34%
 L3/46%
 L46%
Coronal Cobb, ° 0.02
 Preoperative16.3 (12) (0−48)
 Postoperative10.8 (10.3) (0–45)
 ∆−4.8 (8.4) (−24–30)
C7PL, mm0.6
 Preoperative14.1 (15.1) (0–54)
 Postoperative12.9 (9.1) (0–28)
 ∆−3.7 (15.3) (−45–26)
  • C7PL, C7 plumb line (coronal); C7SVA, C7 sagittal vertical axis; LL, lumbar lordosis; PI, pelvic incidence; PT, pelvic tilt; TK, thoracic kyphosis.