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Table 5 Comparisons of radiological parameters and SRS-22 scores between immediate post-operation and last follow-up in Lenke 1 and 2 AIS patients with and without PNT

From: Postoperative neck tilt in Lenke 1 and 2 AIS patients after correction surgery: a novel predictive index

Variables Immediate post-operation Last follow-up P value
Postoperative neck tilt group (n = 41)
 Coronal Parameters
  Postoperative CAT (°) 6.55 ± 1.19 5.33 ± 1.41 0.001
  Postoperative T1 tilt (°) 6.02 ± 3.46 4.34 ± 4.02 < 0.001
  Postoperative PTC (°) 22.76 ± 7.87 24.22 ± 8.11 0.307
  Postoperative AVT of PTC (mm) 10.29 ± 3.14 9.13 ± 2.86 0.038
  Postoperative MTC (°) 17.85 ± 8.07 19.01 ± 8.52 0.123
  Postoperative AVT of MTC (mm) 15.52 ± 7.94 15.23 ± 8.89 0.616
  Postoperative TL/LC (°) 10.63 ± 6.18 14.90 ± 8.17 0.002
  Postoperative AVT of TL/LC (mm) 8.01 ± 5.67 7.75 ± 6.02 0.441
  Postoperative coronal balance (mm) 4.32 ± 5.86 3.62 ± 4.04 0.146
Shoulder balance
  Postoperative CA (o) 1.76 ± 1.51 1.45 ± 1.18 0.251
  Postoperative RSH (mm) 6.80 ± 5.61 6.45 ± 4.87 0.222
Postoperative non-neck tilt group (n = 61)
 Coronal Parameters
  Postoperative CAT (°) 2.74 ± 1.56 3.01 ± 1.52 0.388
  Postoperative t T1 tilt (°) 3.82 ± 2.60 4.25 ± 3.19 0.551
  Postoperative PTC (°) 15.44 ± 7.73 17.21 ± 6.34 0.275
  Postoperative AVT of PTC (mm) 5.71 ± 3.95 5.22 ± 3.72 0.761
  Postoperative MTC (°) 20.98 ± 10.55 22.37 ± 8.67 0.430
  Postoperative AVT of MTC (mm) 14.67 ± 8.78 12.41 ± 7.48 0.178
  Postoperative TL/LC (°) 13.05 ± 6.94 15.18 ± 5.17 0.095
  Postoperative AVT of TL/LC (mm) 7.66 ± 4.10 7.31 ± 5.89 0.796
  Postoperative coronal balance (mm) 9.61 ± 6.76 7.83 ± 7.78 0.064
Shoulder balance
  Postoperative CA (°) 2.05 ± 1.58 1.12 ± 1.09 0.131
  Postoperative RSH (mm) 7.95 ± 5.81 6.40 ± 3.19 0.072