Medial Unicompartmental Knee Arthroplasty Using Patient-Specific Instrumentation – Accuracy of Preoperative Planning, Time Saving and Cost Effectiveness

Since the past few years, patient-specific instrumentation (PSI) has been greatly publicized in knee endoprosthetics. Manufacturers propose advantages such as better accuracy of fit and reduction of both surgical time and operation costs due to pre- operative prosthesis planning. Whether these proposed advantages are achieved in medial unicompartmental knee arthroplasty (UKA) remains unclear. This paper presents results from a retrospective analysis of 22 patients (24 knees) who were electively provided with a medial unicompartmental knee arthroplasty using patient- specific instrumentation.