Robotic-assisted Total Knee Arthroplasty vs. Conventional One

Inclusion Criteria: 1. Listed for a primary total knee replacement (TKR) 2. Indication for the TKR is primary osteoarthritis of the knee joint involving one or more compartments 3. Aged 18 or over 4. Patient willing to provide full informed consent to the trial Exclusion Criteria: 1. Listed for a single-stage one-sided TKR procedure 2. Severe symptoms in the contralateral knee so as to require staged bilateral knee replacements within 6 months of the primary procedure 3. Fixed flexion deformity of 15 degrees or greater who will require excessive resection of the distal femur 4. Clinically assessed uncorrectable varus/valgus deformity of 15 degrees or greater 5. Any co-morbidity which, in the opinion of the investigator, is severe enough to present an unacceptable risk to the patient's safety 6. Inflammatory arthritis 7. Previous septic arthritis in the affected knee joint 8. Previous surgery to the collateral ligaments of the affected knee 9. A contralateral total knee replacement that has been implanted less than one year from the date of consultation 10. A contralateral total knee replacement that is severely painful 11. Patients on warfarin or novel oral anticoagulants (NOACs) 12. Will not be resident in the catchment area for at least 6 months post-surgery 13. Undertaking the surgery as a private patient 14. Patients who, in the opinion of the clinical staff, do not have capacity to consent 15. Patients who are pregnant 16. Unable to understand written and spoken Polish