MIS Unicondylar Knee Arthroplasty with the Extramedullary Technique
Minimally invasive surgery (MIS) unicondylar knee arthroplasty has gained popularity over the recent years following the introduction of the limited approach by Repicci and Eberle.1 Their limited approach was essentially a freehand technique that used limited instrumentation. Over the years there have been modifications in the surgical instruments in order to perform the procedure accurately and reproducibly through a MIS approach. The Miller Galante Unicondylar prosthesis (Zimmer, Warsaw, IN) introduced intramedullary instrumentation and most recently extramedullary instrumentation.2 The smaller and reliable modified instruments clearly help in bone preparation and component position producing clinical results that are comparable with a conventional procedure.3,4 Improved instrumentation allows the surgeon to operate through a minimally invasive arthrotomy, without everting the patella, and permits more accurate bone resection. It is the refinements in instrumentation that have contributed to successful clinical results.
KeywordsFemoral Component Distal Femur Proximal Tibia Minimally Invasive Surgery Medial Collateral Ligament
- 2.Zimmer monograph. The Zimmer unicompartmental high flex knee: intramedullary, spacer block option and extramedullary minimally invasive surgical techniques, 2004Google Scholar