Table 2.

Radial acetabular coverage by acetabular dysplasia subtype

Acetabular coverage by clockface (%)†	Total (n = 50)	Anterosuperior deficiency (n = 15)	Global deficiency (n = 18)	Posterosuperior deficiency (n = 17)
9:00 (posterior)	50 ± 3	53 ± 2*	50 ± 2	47 ± 2*
10:00	55 ± 3	57 ± 2*	54 ± 3	53 ± 4*
11:00	58 ± 3	59 ± 2*	57 ± 4	57 ± 2
12:00	60 ± 3	59 ± 2	59 ±3	60 ± 3
1:00	57 ± 3	55 ± 3*	57 ± 3	59 ± 2*
2:00	48 ± 4	45 ± 2*	48 ± 3	51 ± 3*
3:00 (anterior)	34 ± 3	31 ± 3*	34 ± 3	37 ± 2*

* p < 0.05; ^†values indicate femoral head coverage percentage at each clockface position.