Study of wear performance of crosslinking UHMWPE acetabular liner for artificial hip joint made from CNC milling

Abstract

Crosslinked ultra-high molecular weight polyethylene (UHMWPE) is a preferred material used as a bearing material in the artificial hip joint. The purpose of this study was to analyze the effect of dose cross-linking acetabular liner manufactured by CNC milling on wear depth. The wear test is carried out with a tribometer machine by loading the acetabular liner in a certain cycle. The test results found that specimens given a crosslink dose of 50 kGy with a load of 800 N resulted in a greater wear depth compared to specimens given a crosslink dose of 100 kGy with a load of 800 N. Specimen with crosslink dose 50 kGy yield greater wear depth than specimens given a crosslink dose of 100 kGy. Based on these results it can be concluded that the greater the crosslink dose given to the specimen will increase the wear resistance of the specimen so that the test results in a smaller wear depth.