Ceramic On Ceramic Vs Metal On Metal Hip

Greater wear reduction seen with ceramic on poly vs metal on poly hips researchers found ceramic heads on highly crosslinked polyethylene reduced wear 30 to 40.

Ceramic on ceramic vs metal on metal hip.

Although there is a consensus in the use of cementless components in total hip arthroplasty tha of young patients choice of the bearings remains controversial to decrease polyethylene wear and wear related osteolysis metal on metal mom ceramic on ceramic coc and highly cross linked polyethylene bearings have been introduced in the early 1990s. Regarding the failure of conventional metal on polyethylene total hip replacement thr in younger active patients other bearings have been increasingly used namely ceramic on ceramic coc and large diameter metal on metal mom thr with some advantages. Metal on metal bearings in hip simulator study tsunehito ishida1 ian c. A higher fracture rate in the case of alumina components and hydrothermal degradation for zirconia.

Although com shows lower wear rates than mom in vitro wear testing of com shows widely varying results. However they have some limits. Ceramic on polyethylene is currently the most popular hip replacement material representing 50 6 of all hip replacement cases back in 2014. Ceramic on ceramic and metal on metal bearing surfaces are often employed for total hip replacement because of their resistance to wear.

The ceramic on metal implant did show less wear and friction than the all metal counterpart however. Alumina ceramic hip implants produce lower wear rates than other combinations i e. Brittleness is a major concern for ceramic and ion release is a drawback for metal. Ceramic on metal com bearings are considered to be a promising alternative to polyethylene based bearings or hard on hard bearings ceramic on ceramic coc and metal on metal mom.

Ceramic on crosslinked polyethylene c clpe metal on metal m m and alumina ceramic on alumina ceramic c c articulations are all considered to be high performance low wear options for hip replacement bearings these have all been described as alternative bearings that is an alternative to conventional metal on standard polyethylene pe. Ceramic and metal hip implants no better than traditional ones.