Table V.

Pre- and post-operative acetabular index and center edge angle (°) for patients with developmental dysplasia of the hip.

Time-point/angle type	3D-CT	3D-printed pelvis model
Prior to the operation
Acetabular index angle	38.5±10.5	40.6±12.6
Center edge angle	14.2±6.8	13.5±7.5
Post-operation (3 months)
Acetabular index angle	22.6±4.2	24.3±4.8a
Center edge angle	27.5±5.6	24.4±6.0a

^aP<0.05 vs. 3D-CT. Values are expressed as the mean ± standard deviation. CT, computed tomography.