Virtual Reality for Post Operative Pain Management After Total Knee Arthroplasty

Virtual reality has been used for acute pain management (burn patients) with positive results. Hypnosis has known beneficial effects on patients in the peri-operative setting. The investigators are combining both by giving a virtual reality hypnosis (VRH) session to the patients during a known painful post-operative moment. (physiotherapy) It is the investigator intention to compare pain after physiotherapy during the first 3 days after a total knee arthroplasty, between 2 groups. One group , the VR group gets standard treatment with VRH and the second, the sham group, gets standard treatment with a sham VR session.