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