Wear debris is the main reason for aseptic loosening in total hip. Most troublesome is the wear of @entity691 cups. Ceramic femoral heads were introduced about 20 years ago. The combination ceramic-on- @entity691 reduces the wear rate and the loosening rate. But cups of @entity691 are still the weakest link in a hip prosthesis. @entity505 fibre reinforced plastic (CFRP) was proposed as an alternative for @entity691 . Various test were performed to study the combination metal-on-CFRP, @entity10678 -on-CFRP, and @entity5383 -on-CFRP. The simulator tests showed that the wear rate of @entity5383 -on-CFRP is in the order of 1-3 microm per year. Based on investigation of retrieved implants the wear rate is 6.3 microm per year. Based on these results the combination @entity5383 femoral heads (Biolox-forte) and CFRP cups (Caproman) could be approved for total hip replacement.

Tribological investigations of the wear couple XXXX -CFRP for total hip replacement.

@entity691 :: ('MESH:D020959', 'Chemical') :: ['polyethylene'] @entity10678 :: ('MESH:C028541', 'Chemical') :: ['zirconia'] @entity505 :: ('MESH:D002244', 'Chemical') :: ['Carbon'] @entity5383 :: ('MESH:D000537', 'Chemical') :: ['alumina']
@entity5383 :: (MESH:D000537,Chemical) :: ['alumina']
