Following acute knee trauma some patients will require urgent arthroscopy. Traditionally surgery is undertaken as in-patient on the general trauma list. This system leads to blockage of beds, repeated starving of the patient and out-of-hour's surgery in many cases. We introduced a dedicated Day Surgery knee trauma list (KTL) to reduce in-patient admissions, waiting time and cost. The typical indications for urgent knee arthroscopy are locked knees secondary to meniscal tears, loose bodies or cruciate ligament ruptures; acute osteochondral fractures; and children with acute meniscal tears. This retrospective review compares the study group: patients on the knee trauma list during the first 8 months following introduction, and the control group: patients on the general in-patient trauma list over a similar period immediately prior to implementation of the new list. There were 49 patients in the control group with an average stay in hospital of 2.5 days. Out-of-hour's operations were performed in 13 patients and 3 patients required a repeat arthroscopy. Fifty-three patients were treated in the knee study group. The significant operations were meniscal repair in 7, fixation of osteochondral fragments in 3. None of the patients required overnight stay. Control group patients were more likely to have surgery performed by inexperienced non-specialist knee surgeons, whereas specialist knee surgeons staffed the knee trauma list. Specialist surgeons were available to staff the knee trauma list. As the majority of the control group had spent an average of 2.2 nights in hospital, there has been considerable savings to the hospital. Introduction of the Day Surgical Knee trauma list has reduced unnecessary admissions per week; episodes of prolonged starving, cost and have improved patient satisfaction and management.