Table II.
Detailed prevalence of AD and FAI-related findings in all patients, men, and women
| All subjects (128 hips) | Males (64 hips) | Females (64 hips) | P-value* | |
|---|---|---|---|---|
| Definite AD | ||||
| CE angle <20° | 6.3% (8/128) | 3.1% (2/64) | 9.4% (6/64) | 0.144 |
| [3.2%–11.8%] | [0.9%–10.7%] | [4.4%–19.0%] | ||
| Sharp angle >45° | 7.8% (10/128) | 6.3% (4/64) | 9.4% (6/64) | 0.439 |
| [4.3%–13.8%] | [2.5%–15.0%] | [4.4%–19.0%] | ||
| Total | 11.7% (15/128) | 7.8% (5/64) | 15.6% (10/64) | 0.169 |
| [7.2%–18.4%] | [3.4%–17.0%] | [8.7%–26.4%] | ||
| Borderline AD | ||||
| 20°≤ CE angle <25° | 12.5% (16/128) | 12.5% (8/64) | 12.5% (8/64) | 1 |
| [7.8%–19.3%] | [6.5%–22.8%] | [6.5%–22.8%] | ||
| 42°< Sharp angle ≤45° | 21.9% (28/128) | 15.6% (10/64) | 28.1% (18/64) | 0.087 |
| [15.6%–29.8%] | [8.7%–26.4%] | [18.6%–40.1%] | ||
| Total | 24.2% (31/128) | 21.9% (14/64) | 26.6% (17/64) | 0.536 |
| [17.6%–32.3%] | [13.5%–33.4%] | [17.3%–38.5%] | ||
| Cam deformity | ||||
| α angle ≥55° | 28.9% (37/128) | 40.6% (26/64) | 17.2% (11/64) | 0.003 |
| [21.8%–37.3%] | [29.5%–52.9%] | [9.9%–28.2%] | ||
| HNOR <0.13 | 58.6% (75/128) | 65.6% (42/64) | 51.6% (33/64) | 0.106 |
| [49.9%–66.9%] | [53.4%–76.1%] | [39.6%–63.4%] | ||
| PGD positive | 14.1% (18/128) | 20.3% (13/64) | 7.8% (5/64) | 0.041 |
| [9.1%–21.1%] | [12.3%–31.7%] | [3.4%–17.0%] | ||
| HP positive | 17.2% (22/128) | 25.0% (16/64) | 9.4% (6/64) | 0.016 |
| [11.6%–24.7%] | [16.0%–36.8%] | [4.4%–19.0%] | ||
| Total | 68.0% (87/128) | 79.7% (51/64) | 56.3% (36/64) | 0.004 |
| [59.5%–75.4%] | [68.3%–87.7%] | [44.1%–67.7%] | ||
| Pincer deformity | ||||
| Acetabular index ≤0° | 18.0% (23/128) | 20.3% (13/64) | 15.6% (10/64) | 0.489 |
| [12.3%–25.5%] | [12.3%–31.7%] | [8.7%–26.4%] | ||
| RA | 12.5% (16/128) | 17.2% (11/64) | 7.8% (5/64) | 0.108 |
| [7.8%–19.3%] | [9.9%–28.2%] | [3.4%–17.0%] | ||
| Total | 28.9% (37/128) | 37.5% (24/64) | 20.3% (13/64) | 0.031 |
| [21.8%–37.3%] | [26.7%–49.7%] | [12.3%–31.7%] | ||
| Combined deformity | 20.3% (26/128) | 28.1% (18/64) | 12.5% (8/64) | 0.028 |
| [14.3%–28.1%] | [18.6%–40.1%] | [6.5%–22.8%] | ||
Data are shown as percentage [95% CI]. AD, acetabular dysplasia; FAI, femoroacetabular impingement; CE, center-edge angle; 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.