Open Access
Table 3
Total number of hips with sub-classifications.
| Total number of hips (n; %) | 2176 |
|---|---|
| Primary osteoarthritis (OA) | 638 (29%) |
| Tönnis 1 | 13 (2%) |
| Tönnis 2 | 236 (37%) |
| Tönnis 3 | 389 (61%) |
| Secondary osteoarthritis | 198 (9%) |
| Post traumatic | 31 (16%) |
| Post infective | 10 (5%) |
| Inflammatory | 149 (75%) |
| Malignancy | 8 (4%) |
| Femoroacetabular impingement (FAI) | 289 (13%) |
| Cam | 109 (37.7%) |
| Pincer | 51 (17.6%) |
| Combined | 129 (44.7%) |
| Avascular Necrosis (AVN) | 526 (23%) |
| Ficat & Arlet 1 | 0 (0%) |
| Ficat & Arlet 2 | 57 (11%) |
| Ficat & Arlet 3 | 190 (36%) |
| Ficat & Arlet 4 | 279 (53%) |
| Adult dysplastic hip (ADH) | 186 (9%) |
| Hartofilakidis A | 78 (42%) |
| Hartofilakidis B | 97 (52%) |
| Hartofilakidis C | 11 (6%) |
| Crowe 1 | 65 (35%) |
| Crowe 2 | 107 (58%) |
| Crowe 3 | 13 (7%) |
| Paediatric disorders | 56 (3%) |
| Perthes | 36 (64%) |
| DDH | 15 (27%) |
| SCFE | 5 (9%) |
| Protrusio accetabuli | 223 (10%) |
| Other | 28 (1%) |
| Unknown | 32 (2%) |
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