What Matters to Patients With Severe Hip or Knee Osteoarthritis?

This clinical trial aims to investigate if shared decision-making, and the use of an in-consultation patient decision aid (PtDA), increases the decisional quality and therefore treatment satisfaction and outcome of patients with severe hip or knee osteoarthritis. Finally, an evaluation will be conducted on patient-reported outcomes on pain, physical function, quality of life (QoL), and patient satisfaction, up to one year after surgery.

Inclusion Criteria: * Severe primary osteoarthritis eligible for primary total hip arthroplasty (THA) / primary total knee arthroplasty (TKA) / primary partial knee arthroplasty (UKA) * Able to understand and read Danish * Informed consent Exclusion Criteria: * Previous THA, TKA, or UKA on the contralateral side * Cognitive impairment * Non-OA-related reason for the visit * No digital mailbox (E-boks)