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Table 2 Radiological results

From: Surgical treatment of atlantoaxial subluxation by intraoperative skull traction and C1-C2 fixation

 

Pre-operative

Post-operative

Latest follow-up

ADI (mm)

7.55 ± 1.67

4.03 ± 1.21*1

4.21 ± 0.99†1

A-A angle (degrees)

15.48 ± 9.82

21.61 ± 10.43*2

19.73 ± 8.13†2

A-A height (mm)

35.61 ± 7.66

40.08 ± 8.50*3

38.83 ± 6.97†3

  1. ADI atlas-dens interval, A-A angle atlantoaxial angle, A-A height atlantoaxial height
  2. * Paired t test between pre-operative and post-operative. Significant differences were considered for P value less than 0.05.*1P = 0.000, *2P = 0.010, *3P = 0.004
  3. † Paired t test between post-operative and final follow-up. Significant differences were considered for P value less than 0.05. †1P = 0.079, †2P = 0.292, †3P = 0.224