Research Article

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

Table 1

Results of ICCs for measurement in preoperative full-spine X-ray and Pre-OS models.

ParametersX-rayPre-OSICC (95% CI)

GK (°)0.942 (0.882-0.972)
TK (°)0.954 (0.907-0.978)
LL (°)0.955 (0.908-0.978)
MC (°)2.60 (0.75-10.15)2.55 (0.00-9.00)0.992 (0.983-0.996)
SVA (cm)6.95 (5.77-12.73)7.80 (5.85-12.15)0.965 (0.928-0.983)

GK: global kyphosis; TK: thoracic kyphosis; LL: lumbar lordosis; MC: main curve; SVA: sagittal vertical axis; Pre-OS: preoperative original 3D spine.