Abstract
The authors have analyzed the wear of a ceramic-on-ceramic hip joint prosthesis retrieved after 25 years of use. Severe wear and flattening of the femoral head was revealed, while the acetabular component was less worn. Three wear zones can be seen on the femoral head depending on surface topography. The wear patterns of the ceramic components of the prosthetic head indicate the role of microseparation that occurs during implant functioning.
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