Computer-Assisted Optimization of the Acetabular Rotation in Periacetabular Osteotomy Using Patient’s Anatomy-Specific Finite Element Analysis

Table 2

Changes in anatomical angles of Post-OP models due to incremental increase in acetabulum rotations. The “” sign indicated to be within the normal range.

Rotation axis	Incremental ROM of acetabulum	CE angle	Acetabular abduction	Acetabular anteversion
Pre-OP model		12.2°	48.1°	10.8°
Post-OP models
Sagittal plane (x-axis)	1/3	9.7°	51°	13.5°
	2/3	10.5°	51.3°	14.6°
	3/3	11.7°	49.4°	15.6°
	4/3	10.9°	48.5°	16.2°
Coronal plane (y-axis)	1/3	12.5°	47.4°	15°
	2/3	15.9°	41.9°	10.5°
	3/3	20.9°	36.2°	10.7°
	4/3	26.7°	29.7°	8.5°
Transverse plane (z-axis)	1/3	9°	50.4°	12.1°
	2/3	9.8°	50.6°	11.5°
	3/3	10°	51.4°	11.5°
	4/3	11.9°	49.5°	13.5°`