Table VI.

Corresponding percentage of combination of coexistence with each type of AD and each FAI-related finding compared with all hips with coexistence of each type of AD (definite or borderline) and each FAI-related deformity (cam or pincer deformity)

	All subjects	Males	Females	P-value*
Definite AD + cam deformity
Definite AD + α angle ≥55°	40% (4/10)	40.0% (2/5)	40.0% (2/5)	1
	[16.8%–68.7%]	[11.8%–76.9%]	[11.8%–76.9%]
Definite AD + HNOR < 0.13	100% (10/10)	100% (5/5)	100% (5/5)	–
	[72.2%–100%]	[56.6%–100%]	[56.6%–100%]
Definite AD + PGD positive	10% (1/10)	20% (1/5)	0% (0/5)	0.292
	[1.8%–40.4%]	[3.6%–62.4%]	[0%–43.3%]
Definite AD + HP positive	20% (2/10)	20% (1/5)	20% (1/5)	1
	[5.7%–51.0%]	[3.6%–62.4%]	[3.6%–62.4%]
Definite AD + pincer deformity
Definite AD + acetabular index ≤0°	0% (0/2)	0% (0/2)	(0/0)	–
	[0%–65.8%]	[0%–65.8%]
Definite AD + RA	100% (2/2)	100% (2/2)	(0/0)	–
	[34.2%–100%]	[34.2%–100%]
Borderline AD + cam deformity
Borderline AD + α angle ≥55°	55.6% (10/18)	41.7% (5/12)	83.3% (5/6)	0.094
	[33.7%–75.4%]	[19.3%–68.0%]	[43.6%–97.0%]
Borderline AD + HNOR < 0.13	88.9% (16/18)	83.3% (10/12)	100% (6/6)	0.249
	[67.2%–96.9%]	[55.2%–95.3%]	[61.0%–100%]
Borderline AD + PGD positive	27.8% (5/18)	25.0% (3/12)	33.3% (2/6)	0.709
	[12.5%–50.9%]	[8.9%–53.2%]	[9.7%–70.0%]
Borderline AD + HP positive	22.2% (4/18)	33.3% (4/12)	0% (0/6)	0.109
	[9.0%–45.2%]	[13.8%–60.9%]	[0%–39.0%]
Borderline AD + pincer deformity
Borderline AD + acetabular index ≤0°	33.3% (1/3)	0% (0/2)	100% (1/1)	0.083
	[6.1%–79.2%]	[0%–65.8%]	[20.7%–100%]
Borderline AD + RA	66.7% (2/3)	100% (2/2)	0% (0/1)	0.083
	[20.8%–93.9%]	[34.2%–100%]	[0%–79.3%]

Data are shown as percentage [95% CI]. AD, acetabular dysplasia; FAI, femoroacetabular impingement; PGD, pistol grip deformity; HP, herniation pit; HNOR, head–neck offset ratio; RA, retroverted acetabulum.

^*Male versus female, evaluated with χ² test. P-values of <0.05 were considered statistically significant.