Bearing Surfaces in Hip Arthroplasty (MoM, MoP, CoC, CoP)
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.
Practised by MCQ
10Which bearing surface is considered the gold standard in total hip arthroplasty due to its long-term track rec...
mcqWhat is a significant disadvantage of Metal-on-Metal (MoM) bearing surfaces?
mcqWhich bearing surface is known for having the lowest wear rate in total hip arthroplasty?
mcqWhat is a potential risk associated with Ceramic-on-Polyethylene (CoP) bearings?
mcqWhat improvement has been made to Metal-on-Polyethylene (MoP) bearings to reduce wear rates?
mcqWhich bearing surface is increasingly preferred for its good balance between wear resistance and noise generat...
mcqWhich material is used in modern Ceramic-on-Ceramic (CoC) bearings to enhance toughness?
mcqWhat is the primary wear mechanism seen in Metal-on-Polyethylene (MoP) bearings?
mcqWhat is the advantage of larger femoral head sizes in Total Hip Arthroplasty?
mcqWhich of the following statements is true regarding Metal-on-Polyethylene (MoP) bearings?