ROSA Total Knee Post Market Study EMEA

Inclusion/Exclusion criteria Inclusion criteria: * Patient is a minimum of 18 years of age * Independent of study participation, patient is a candidate for commercially available Persona, NexGen, or Vanguard knee components implanted in accordance with product labeling * Patient has participated in this study-related Informed Consent Process * Patient is willing and able to provide written Informed Consent by signing and dating the EC approved Informed Consent form * Patient is willing and able to complete scheduled study procedures and follow-up evaluations Exclusion criteria: * Patient is currently participating in any other surgical intervention studies or pain management studies * Patient has underwent contralateral UKA or TKA within the last 18 months * Hip pathology with significant bone loss (e.g. avascular necrosis of the femoral head with collapse, severe dysplasia of the femoral head or the acetabulum) * Hip pathology severely limiting range of motion (e.g. arthrodesis, severe contractures, chronic severe dislocation) * Patient is pregnant or considered a member of a protected population (e.g., prisoner, mentally incompetent, etc.) * Patient has previously received partial or total knee arthroplasty for the ipsilateral knee