Abstract
Introduction
Computer assisted total knee replacement (CATKR) has been shown to give reproducible and accurate alignment of the mechanical axis. The benefits of the reproducible technique has been demonstrated in literature but there is little evidence of benefits in training junior surgeons in a clinical setting. We show our experience of CATKR performed by junior staff under supervision by the senior author, looking at component alignment and patient reported outcome measures.
Objectives
Assess radiological and clinical outcomes of Computer Assisted Total Knee Replacements performed by trainees.
Methods
Pre-operative Knee Society Scores (KSS) were recorded and all patients underwent CATKR by a trainee who was supervised by the senior author. The Stryker navigation system was used and a Triatholon Total Knee replacement was implanted. Post-operatively patients had long leg Maquet views to assess component alignment and Post-operative Knee Society Scores at a minimum of 5 years were recorded.
Results
Pre-operatively the KSS score was 45.6 (24–59) and function 54 (42–65) with post operative scores for KSS 80.0 (55–94) and function 81 (55–100). Post-operatively the average mechanical tibio-femoral angle for the CATKR group was 1.88 degrees varus, the tibial component angle was 90.63 degrees and the femoral component angle was 89.88 degrees.
Conclusions
This is the first study of its kind, looking at the medium term outcome of computer assisted total knee replacements performed by trainee surgeons. Our study demonstrates that satisfactory patient outcomes can be achieved by trainee surgeons undertaking Computer Assisted TKR. Despite the learning curve associated with component positioning, trainees were able to achieve satisfactory alignment using the navigation system.
