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