| Variables | Sinus tract (cases) | P value | |
| Yes | No | ||
| Total | 4 | 38 |
|
| Diabetes mellitus | 1 | 8 | 0.99 |
| Rheumatoid arthritis | 0 | 3 | 0.99 |
| Corticoid dependence | 1 | 7 | 0.26 |
| Pulmonary tuberculosis | 2 | 7 | 0.17 |
| Tuberculosis infection syndrome before THR* | 3 | 6 | <0.05* |
| Abscesses on admission | 3 | 17 | 0.3 |
| Acetabular infection before THR | 0 | 8 | 0.99 |
| Trans-trochanter infection before THR | 0 | 5 | 0.99 |
| Acetabular protrusion before THR | 0 | 3 | 0.99 |