Unicompartmental knee replacements offer improved function with more rapid recovery compared to TKR. There is no published experience with introducing this procedure as a day case in the UK. We report on our experience with a new protocol allowing the patient to be discharged on the day of surgery.

A new combination of anaesthetic and surgical techniques are employed. Paracetamol, ibuprofen and pregabalin are given pre-operatively. Patients receive a GA and a subsartorial saphenous nerve block is administered under ultrasound control. The surgery is performed using a routine minimally invasive technique. The joint and surrounding tissues are infiltrated with a combination of LA and adrenaline. Wound closure is with subcutaeneous suture and tissue glue.

Patients are mobilised on the day of surgery and if comfortable discharged on paracetamol, codeine, ibuprofen, tramadol P.R.N and buprenorphine patch.

Length of stay, pain scores, presence of nausea/vomiting, dizziness, drowsiness, post-operative bleeding and patient satisfaction are all recorded.

18 out of 19 patients have been discharged on the day of surgery. All record high satisfaction.

Patients can be safely discharged on the day of surgery after UKR with high levels of satisfaction. We believe we are the first unit in the UK to achieve this.