Table II.

Assessments of radiographic analyses of hip joints.

Assessment	Grade	Description
Shape	0	Normal
	1	Femoral head does not fit in a circle due to bone loss
	2	Obvious bone loss and distinct exostosis giving a slight conical appearance
	3	Very gross remodelling with marked bone loss and much new bone
Position of femoral head	0	Femoral head is well centered in the acetabulum or lies medially to the DAE
	1	Center of femoral head is superimposed on the DAE
	2	Center of femoral head is just lateral to the DAE
	3	Center of femoral head is well lateral to, and just touches, the DAE
Cranial acetabular	0	Sharp, clean-cut junction of rim the DAE and CRAE
	1	Very small exostosis
	2	Small exostosis or very small facet
	3	Gross exostosis and/or facet and/or moderate bilabiation
Femoral head and neck exostosis	0	Smooth rounded profile
	1	Slight exostosis in ring form and/or dense vertical line adjacent to trochanteric fossa (Morgan line)
	2	Distinct exostosis in ring form
	3	Massive exostosis giving a mushroom-like appearance
Norberg angle	0	≥ 105°
	1	≥ 100° to < 105°
	2	≥ 95° to < 100°
	3	< 95°

DAE — dorsal acetabular edge; CRAE — cranial acetabular edge.