Table 1.

Radiographic measurement values

	DDH	Borderline DDH	Normal	Pincer FAI	FAI	Borderline FAI	Normal
Lateral center edge angle of Wiberg	≤19°	20°–24°	25°–35°	≥36°
Acetabular index	>10°		0°–10°	<0°
Head neck offset ratio					<0.17		≤0.17
Alpha angle					≥55°	50°–54°	≤49°

DDH = developmental dysplasia of the hip; FAI = femoroacetabular impingement.