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9 Cards in this Set
- Front
- Back
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what is rheumatoid arthritis?
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-inflammation of joints and swelling of soft tissue
(autoimmune disorder) |
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what is hip dysplasia
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femoral head not stable in acetabulum
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what are the 4 components of hip replacement prosthesis
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-acetabular shell
-cup -ball -stem |
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what are advantages of using ceramic on ceramic replacement joints (5)
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-low wear
-low friction -high hardness/low grain size -high lubrication -high biocompatibility |
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how does grain size affect brittleness and hardness
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decreased grain size increases hardness and brittleness
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what are the 3 pros and 1 con of titanium in THR
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pros: biocompatibility, high strength, ductile
con: undesirable wear rate |
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what are the 3 pros and 1 con of UHMWPE in THR
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pros: low friction, hard, biocompatible
con: undesirable wear rate |
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what are the 5 pros and 1 con of alumina in THR
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pros: corrosion resistant, less wear, biocompatible, strength, low friction
con: susceptible to cracking |
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what are the 4 failure modes for ceramic on ceramic THR
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impingement
fracture loosening stripe wear |
