Table 2.
Characteristics of Patients Diagnosed With Hip Dysplasia, 2000-2016a
| 2000-2004 (n = 52) | 2005-2009 (n = 52) | 2010-2016 (n = 92) | Total (N = 196) | |
|---|---|---|---|---|
| Age at date of pain, y | 25.2 ± 12.3 | 25.6 ± 10.2 | 28.1 ± 7.7 | 26.7 ± 9.8 |
| Sex | ||||
| Male | 20 (38.5) | 18 (34.6) | 29 (31.5) | 67 (34.2) |
| Female | 32 (61.5) | 34 (65.4) | 63 (68.5) | 129 (65.8) |
| Ethnicity | ||||
| White | — | — | — | 140 (89.7) |
| Black | — | — | — | 5 (3.2) |
| Asian | — | — | — | 6 (3.8) |
| Other | — | — | — | 5 (3.2) |
| Laterality | ||||
| Left | 23 (44.2) | 23 (44.2) | 35 (38.0) | 81 (41.3) |
| Right | 29 (55.8) | 29 (55.8) | 57 (62.0) | 115 (58.7) |
| Body mass index, kg/m2 | 28 ± 5.2 | 27.2 ± 4.9 | 27.3 ± 5.0 | 27.5 ± 5.0 |
| Radiographic findings | ||||
| LCEA 18°-24° | 16 (30.8) | 17 (32.7) | 22 (42.3) | 55 (28.1) |
| LCEA <18° | 35 (67.3) | 35 (67.3) | 70 (134.6) | 140 (71.4) |
| Alpha angle >55° | 37 (71.2) | 40 (76.9) | 70 (76.1) | 147 (75.0) |
| Positive crossover sign | 37 (71.2) | 32 (61.5) | 54 (58.7) | 123 (62.8) |
| Positive posterior wall sign | 39 (75.0) | 39 (75.0) | 69 (75.0) | 147 (75.0) |
| Positive ischial spine sign | 25 (48.1) | 21 (40.4) | 35 (38.0) | 81 (41.3) |
| Hips with MRI | 17 (32.7) | 24 (46.2) | 46 (50.0) | 87 (44.4) |
| Labral tear on MRI | 10 (19.2) | 20 (38.5) | 37 (40.2) | 67 (34.2) |
| Hip dysplasia diagnosis at initial visit | 22 (42.3) | 16 (30.8) | 33 (35.9) | 71 (36.2) |
aData are presented as mean ± SD or No. (% of group). Dashes indicate not applicable (only the total ethnicities were collected). LCEA, lateral center-edge angle; MRI, magnetic resonance imaging.