Table 3 Reoperation causes, surgical and medical complications

 Persistent wound discharge requiring irrigation and debridement

2

4

 Wound haematoma requiring open drainage

1

1

 Periprosthetic infection

1

 Intra-articular haematoma

1

 Reoperation causes above-mentioned

3

7

 Medial collateral ligament injury/avulsion

2

 Patella-tendon insertion avulsion

1

 Intra-operative fracture

1

2

 Popliteal artery laceration

1

 Ischaemic stroke

1

 Chest infection

4

 Urinary tract infection

2

4

 Acute renal failure

1

 Insomnia

1

 Gastrointestinal bleeding

1

 Deep vein thrombosis

1

 Congestive heart failure

1

 Aspirin-induced gastrointestinal upset

1

 Transient fast atrial fibrillation

1

 Transient hypotension (resolved with only fluid replacement)

1

 Common peroneal nerve palsy

1