Table 1.
Hips with followup by Outerbridge grade at surgery
| Outerbridge grade at surgery | Number of hips (percent of 340 total) | Received followup | Percent obtained followup |
|---|---|---|---|
| Acetabular | |||
| Normal | 165 (49%) | 51 | 31% |
| Grade I | 45 (13%) | 13 | 29% |
| Grade II | 45 (13%) | 15 | 33% |
| Grade III | 29 (9%) | 10 | 35% |
| Grade IV | 56 (16%) | 22 | 39% |
| Femoral | |||
| Normal | 197 (58%) | 56 | 28% |
| Grade I | 50 (15%) | 16 | 32% |
| Grade II | 36 (11%) | 12 | 33% |
| Grade III | 25 (7%) | 10 | 40% |
| Grade IV | 32 (9%) | 17 | 53% |
| Both acetabular and femoral grades at least | |||
| Normal | 227 (67%) | 68 | 30% |
| Grade I | 39 (11%) | 12 | 31% |
| Grade II | 31 (9%) | 13 | 42% |
| Grade III | 21 (6%) | 7 | 33% |
| Grade IV | 22 (6%) | 11 | 50% |
| Either acetabular or femoral grades at least | |||
| Normal | 135 (40%) | 39 | 29% |
| Grade I | 56 (16%) | 17 | 30% |
| Grade II | 50 (15%) | 14 | 28% |
| Grade III | 33 (10%) | 13 | 39% |
| Grade IV | 66 (19%) | 28 | 42% |
| Total | 340 | 111 | 33% |