Table 1.

Inclusion criteria

•Patients with clinical and radiological osteoarthritis of the hip suitable for primary cementless THA and patients with clinical and radiological osteoarthritis of the knee suitable for primary CR TKA

•Age 18–80

•ASA < 3

•Interested in and motivated for discharge on DOS

•Family/relatives to be present for > 24 hours after discharge

•Able to understand and give consent to the study