Table 5.
Association between long-term outcome at a mean age of 50 years in Group 1, given as the number of hips according to osteoarthritis and total hip arthroplasty (THA)
| Osteoarthritis | THA | |||||
|---|---|---|---|---|---|---|
| Radiographic grading | No | Yes | p-value* | No | Yes | p-value* |
| IHDI | ||||||
| I | 1 | 0 | 0.827 | 1 | 0 | 0.503 |
| II | 12 | 9 | - | 16 | 5 | - |
| III | 16 | 12 | - | 17 | 11 | - |
| IV | 10 | 9 | - | 11 | 8 | - |
| LMH | ||||||
| I | 1 | 0 | 0.231 | 1 | 0 | 0.030 |
| II | 22 | 12 | 27 | 7 | - | |
| III | 16 | 18 | 17 | 17 | - | |
| Tönnis | ||||||
| I | 1 | 0 | 0.459 | 1 | 0 | 0.643 |
| II | 26 | 19 | 30 | 15 | - | |
| III | 7 | 9 | 9 | 7 | - | |
| IV | 1 | 0 | 1 | 0 | - |
IHDI, International Hip Dysplasia Institute classification; LMH, lateral metaphysis height classification; Tönnis, the Tönnis classification
*
Pearson’s chi-square test.