Table 3.

Clinical and radiological results of patients preoperatively and at last followup

Preoperative Tönnis grade	Preoperative AI (range)	Followup AO (range)	Followup Severin class	Followup McKay grade	Followup C-E angle (range)	Followup RI	Followup D/W ratio (%)
31 hips; G 410 hips; G 33 hips; G 2	37.6°(25–60°)	12.5°(10–32°)	8 hips; C 132 hips; C 24 hips; C 3	17 hips; G I17 hips; G II9 hips; G III1 hip; G IV	29.1° (11–48°)	0.18 (0–0.46)	42.3 (25–59)
	p < 0.05

AI = acetabular index; AO = acetabular roof obliquity angle; C-E = center-edge angle; RI = Reimers index; D/W = acetabular depth-to-width ratio.