Table 1 Advantages and disadvantages of bearing surfaces

MoP Articulation

∙ Good long term results in elderly patients

∙ Higher rate of liner wear

∙ Newly materials - XLPE, Antioxidant doped PE

∙ PE liner wear debris generated the occurrence of osteolysis

∙ Newly materials do not have long term results

MoM Articulation

∙ Reduction in wear

∙ Bone and soft tissue necrosis with pseudotumor formation

∙ Improvement of range of movement

∙ Cobalt and chromium ions can affect the body

∙ Lower dislocation rate

∙ Relatively high rate of osteolysis and implant failure

∙ Good clinical results in small head MoM

∙ Withdrawal of large head MoM

CoC Articulation

∙ Lower wear rate

∙ Ceramic fracture

∙ Lower osteolysis

∙ Squeaking noise

∙ Very higher survivor rate in long term results

∙ Harmless wear particle to human body

CoP Articulation

∙ Ceramic surfaces advantages + PE surfaces advantages

∙ Alumina head fracture

∙ Lower wear rate

∙ Metal transfer