"Recently, virtual reality has become more accessible thanks to the use of smaller, more comfortable and easier-to-use devices. Its use in operating theatres is growing.

However, despite the clinical effectiveness of virtual reality in reducing pain and anxiety, there are very few feedback studies from patients on their experience of surgery and their satisfaction, especially in orthopaedics.

The aim of this study is to demonstrate the superiority, during long awake orthopaedic surgery, of equipping the patient with a virtual reality headset, on patient satisfaction, compared with the same surgery without a headset.

The visual support offered will be appropriate to the duration of the surgery, i.e. more than 1 hour."

Inclusion Criteria:

• Patient 18 years of age or older
• Patient admitted for total hip or knee replacement surgery.
• Patient undergoing anaesthetic management by loco-regional anaesthesia
• Affiliation to a French health insurance scheme or equivalent
• Patient who has given his non-opposition agreement

Exclusion Criteria:

• Patient with a neurological disorder (coma, dementia, confusion, photosensitive epilepsy)
• Patient with a severe psychiatric disorder
• Patients with severe deafness or visual impairment
• Language barrier
• Pregnant or breast-feeding women of childbearing age
• Refusal of patient involvement

Major patients admitted for total hip or knee replacement surgery and whose anaesthetic management is by loco-regional anaesthesia