Ceramic bearings have the lowest wear rates of any bearing combination 0 5 to 2 5 µ per component per year ceramic on polyethylene bearings have varied ranging from 0 to 150 µ.
Stripe wear ceramic head.
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Stripe wear has been reported in first second and third generation alumina bearings in which it has been associated with steep cup angles young patients and revision surgery 19 27.
The role of stripe wear in causing acoustic emissions from alumina ceramic on ceramic bearings.
Ceramic femoral head demonstrating a patch of wear.
The determination of femoral head stripe wear magnitude and ceramic liner fracture propensity involved a multistep approach previously described.
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Metal transfer from the cup is also apparent.
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The femoral head demonstrated a characteristic stripe wear pattern and the overall volumetric wear rate was high 19 mm 3.
Stripe wear scar has been highlighted with pencil lead.
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Stresses developed during hip articulation with or without the occurrence of component impingement were determined from a global dynamic fe model of tha mechanics.
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Ceramic on ceramic hip retrieved for squeaking.
Ceramic microseparation can lead to edge load ceramic head wear and squeaking.
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The as manufactured articular surface note the sing le grain defect fig.
A region exhibiting stripe wear lower half of the micrograph.
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The regions of wear showed a roughened surface with grain pullout.