Sex differences in the anatomy of the anterior–superior acetabular rim in relation to pincer-type femoroacetabular impingement in Koreans: a three-dimensional quantitative analysis

Table 2 Comparison of measurements between sexes

	Total	Comparison between sexes				Comparison between AIIS ridge types
	Total	Men (n = 76)	Women (n = 66)	P value	Effect size	Anterior (n = 28)	Posterior (n = 114)	P value	Effect size
Radius	21.60 ± 2.23	22.85 ± 1.91	20.20 ± 1.70	< 0.001	1.45	22.75 ± 1.96	21.34 ± 2.23	0.003	0.65
Coverage	0.83 ± 0.07	0.85 ± 0.07	0.82 ± 0.06	0.011	0.46	0.86 ± 0.06	0.83 ± 0.07	0.016	0.44
IP
x/R	0.39 ± 0.17	0.39 ± 0.18	0.43 ± 0.18	0.223	0.22	0.24 ± 0.10	0.45 ± 0.17	< 0.001	1.32
y/R	0.80 ± 0.17	0.81 ± 0.18	0.73 ± 0.15	0.006	0.48	0.95 ± 0.09	0.73 ± 0.16	< 0.001	1.48
z/R	0.83 ± 0.16	0.77 ± 0.15	0.92 ± 0.14	< 0.001	1.03	0.68 ± 0.13	0.88 ± 0.15	< 0.001	1.37
MAP
y1/R	0.97 ± 0.12	0.97 ± 0.11	0.98 ± 0.13	0.707	0.08	0.99 ± 0.09	0.97 ± 0.12	0.559	0.17
z1/R	0.64 ± 0.17	0.59 ± 0.17	0.69 ± 0.15	< 0.001	0.62	0.56 ± 0.12	0.66 ± 0.17	0.006	0.62
MLP
×2/R	0.71 ± 0.12	0.75 ± 0.12	0.68 ± 0.11	0.001	0.61	0.78 ± 0.13	0.70 ± 0.11	0.001	0.70
z2/R	1.04 ± 0.14	0.98 ± 0.12	1.09 ± 0.17	< 0.001	0.76	0.97 ± 0.11	1.05 ± 0.16	0.013	0.53

All quantitative variables are presented as a mean ± standard deviation
AIIS Anterior inferior iliac spine, IP Inflection point, MAP Most anterior point, MLP Most lateral point, d distance from center of femoral head, R radius

ISSN: 1749-799X