The Reliability of Computer-Assisted Three-Dimensional Surgical Simulation of Posterior Osteotomies in Thoracolumbar Kyphosis Secondary to Ankylosing Spondylitis Patients

Table 2

Results of ICCs and Bland-Altman analysis for radiological measurement in Post-OS and SS models.

Parameters	Post-OS	SS	ICC analysis	Bland-Altman analysis
			ICC (95% CI)	Mean bias	LOA (95% CI)
GK (°)			0.832 (0.677-0.916)	3.400	-6.183-12.98
TK (°)			0.773 (0.577-0.885)	4.233	-3.256-11.72
LL (°)			0.896 (0.794-0.949)	-0.2330	-15.12-10.46
MC	0.00 (0.50-1.25)	0 (0.00-0.00)	0.680 (0.428-0.834)	—	—
SVA (cm)	4.10 (3.05-6.72)	3.85 (2.10-5.58)	0.619 (0.338-0.798)	0.727	-2.902-4.356

MC and SVA were exhibited as medians with interquartile range. SS: simulated 3D spine; Post-OS: postoperative original 3D spine.