Causes of related admission within 30 days of discharge after primary unilateral total knee replacement
| Causes of readmission | N |
| Surgical site infection | 13 |
| Pain/swelling/stiffness | 11 |
| Non-infective wound discharge | 5 |
| Deep vein thrombosis | 4 |
| Periprosthetic fracture | 3 |
| Haematoma/bleeding | 2 |
| Erythema | 2 |
| Contact dermatitis | 1 |
| Wound dehiscence | 1 |
| Grand total | 42 |