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Table 3 Comparison of the OVA with the osteotomy angles predicted by different methods

From: Evaluation of preoperative calculation methods of osteotomy size in ankylosing spondylitis with thoracolumbar or lumbar kyphosis

Method

Osteotomy angle (\(^\circ\))

P value

SFA method

51.24 \(\pm\) 12.14

0.226

HP-HA method

60.07 \(\pm\) 13.58

0.008

CAM-HA method

56.61 \(\pm\) 8.58

0.003

Surgimap method

53.80 \(\pm\) 9.79

0.042

FBI method

48.08 \(\pm\) 12.49

0.704

  1. P, the osteotomy angle by various methods vs. the OVA at final follow-up using paired t test