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Table 3 Prevalence of AD calculated from all combinations with each parameter in the three planes (coronal, axial, sagittal)

From: Multiplanar evaluation of radiological findings associated with acetabular dysplasia and investigation of its prevalence in an Asian population: a CT-based study

Definition of AD All subjects (n = 52) Males (n = 29) Females (n = 23) P value*
CE angle <20°, AASA <50°, or VCA angle <20° 25.0% (13/52)
(95% CI: 15.2–38.2%)
13.8% (4/29)
(95% CI: 5.5–30.6%)
39.1% (9/23)
(95% CI: 22.2–59.2%)
0.036
CE angle <20°, PASA <90°, or VCA angle <20° 26.9% (14/52)
(95% CI: 16.8–40.3%)
27.6% (8/29)
(95% CI: 14.7–45.7%)
26.1% (6/23)
(95% CI: 12.5–46.5%)
0.903
Sharp angle >45°, AASA <50°, or VCA angle <20° 28.8% (15/52)
(95% CI: 18.3–42.3%)
17.2% (5/29)
(95% CI: 7.6–34.5%)
43.5% (10/23)
(95% CI: 25.6–63.2%)
0.038
Sharp angle >45°, PASA <90°, or VCA angle <20° 30.8% (16/52)
(95% CI: 19.9–44.3%)
27.6% (8/29)
(95% CI: 14.7–45.7%)
34.8% (8/23)
(95% CI: 18.8–55.1%)
0.576
Acetabula index >14°, AASA <50°, or VCA angle <20° 28.8% (15/52)
(95% CI: 18.3–42.3%)
20.7% (6/29)
(95% CI: 9.8–38.4%)
39.1% (9/23)
(95% CI: 22.2–59.2%)
0.144
Acetabula index >14°, PASA <90°, or VCA angle <20° 28.8% (15/52)
(95% CI: 18.3–42.3%)
27.6%(8/29)
(95% CI: 14.7–45.7%)
30.4% (7/23)
(95% CI: 15.6–50.9%)
0.821
ADR <250, AASA <50°, or VCA angle <20° 32.7% (17/52)
(95% CI: 21.5–46.2%)
20.7% (6/29)
(95% CI: 9.8–38.4%)
47.8% (11/23)
(95% CI: 29.2–67.0%)
0.038
ADR <250, PASA <90°, or VCA angle <20° 36.5% (19/52)
(95% CI: 24.8–50.1%)
34.5% (10/29)
(95% CI: 19.9–52.7%)
39.1% (9/23)
(95% CI: 22.2–59.2%)
0.729
AHI <75%, AASA <50°, or VCA angle <20° 23.1% (15/52)
(95% CI: 18.3–42.3%)
20.7% (6/29)
(95% CI: 9.8–38.4%)
39.1% (9/23)
(95% CI: 22.2–59.2%)
0.144
AHI <75%, PASA <90°, or VCA angle <20° 28.8% (15/52)
(95% CI: 18.3–42.3%)
27.6% (8/29)
(95% CI: 14.7–45.7%)
30.4% (7/23)
(95% CI: 15.6–50.9%)
0.821
  1. AD acetabular dysplasia, CE center edge, AASA anterior acetabular sector angle, VCA vertical-center-anterior margin angle, PASA posterior acetabular sector angle, ADR acetabular depth ratio, AHI acetabulum head index. *Male vs female subjects, evaluated with a χ 2 test. P values < 0.05 were considered statistically significant