Main bearing couples: Metal-on-Polyethylene (MoP), Metal-on-Metal (MoM), Ceramic-on-Ceramic (CoC), Ceramic-on-Polyethylene (CoP). MoP: gold standard; risk of wear/osteolysis; improved with highly crosslinked PE. MoM: large heads, low wear but metal ions, ALTR, pseudotumors; largely abandoned. CoC: lowest wear; risk of squeaking, fracture. CoP: good compromise — low wear, no squeaking; increasingly preferred.
Which bearing surface is considered the gold standard in total hip arthroplasty due to its long-term track record and cost-effectiveness?
What is a significant disadvantage of Metal-on-Metal (MoM) bearing surfaces?
Which bearing surface is known for having the lowest wear rate in total hip arthroplasty?
What is a potential risk associated with Ceramic-on-Polyethylene (CoP) bearings?
What improvement has been made to Metal-on-Polyethylene (MoP) bearings to reduce wear rates?
Which bearing surface is increasingly preferred for its good balance between wear resistance and noise generation?
Which material is used in modern Ceramic-on-Ceramic (CoC) bearings to enhance toughness?
What is the primary wear mechanism seen in Metal-on-Polyethylene (MoP) bearings?
What is the advantage of larger femoral head sizes in Total Hip Arthroplasty?
Which of the following statements is true regarding Metal-on-Polyethylene (MoP) bearings?
