SURFACE DAMAGE IN MACHINED RAM-EXTRUDED AND NET-SHAPE MOLDED RETRIEVED POLYETHYLENE TIBIAL INSERTS OF TOTAL KNEE REPLACEMENTS

Abstract
Background:Polyethylene wear has emerged as a major determining factor in the long-term clinical performance of total knee replacements. This study addresses the in vivo wear performance of two types of polyethylene tibial inserts used in similar total knee arthroplasty designs.Methods:A surface dam