Trial of gun application vs finger loading of cement for cementation of tibial component in primary total knee replacement

INTERVENTION: Patients undergoing total knee replacement surgery will be randomised into two groups. Group A will have their knee replacement implanted using the current technique of finger packing cement into bone for the femoral component and loading the tibial tray with cement before impaction of the tibial implant. Group B will have cement applied while still liquid to the tibial plateau using the cement gun before application of the tibial component. Other aspects of bone preparation and cementing will remain unchanged, including use of pulsed lavage and hydrogen peroxide. Initial outcome will be assessed according to radiolucent lines on post‐operative radiographs. Assessments will be performed by a single observer (RKP), blinded to the patients' group allocation. CONDITION: Surgery: Total knee replacement (TKR) ; Surgery ; Total knee replacement (TKR) PRIMARY OUTCOME: Long‐term outcome will be assessed after 10 years prospective follow‐up ‐ revision rate SECONDARY OUTCOME: Not provided at time of registration INCLUSION CRITERIA: 1. Patients undergoing primary total knee replacement for osteoarthritis 2. Males and female inpatients