Challenge of the Week / Hip / 11.27.2020

Which of the following best describes the wear characteristics of metal-on-metal articulations?
    • Mechanical impingement typically occurs at a lower range of motion compared with metal-on-polyethylene articulation
    • Due to the larger head sizes that are used in metal-on-metal articulations, impingement occurs at a higher range of motion compared with metal-on-polyethylene

 

    • A decreased volume of particles are emitted compared with conventional polyethylene liners
    • A decreased volume of smaller particles are released as a result of metal-on-metal articulation wear.

 

    • They exhibit higher linear wear rates when compared with conventional polyethylene liners
    • Metal liners exhibit decreased wear compared with conventional polyethylene liners

 

    • Larger particles are released as a result of the articulation wear
    • Smaller particles are released as a result of articulation wear

     

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