Biomaterials in Orthopaedics
Metals: stainless steel (316L), cobalt‑chrome, titanium alloys; differences in modulus, corrosion resistance, MRI artifacts. Polymers: UHMWPE (arthroplasty bearings), PMMA (bone cement), PEEK (spacers). Ceramics: alumina/zirconia (bearings), hydroxyapatite/tricalcium phosphate (coatings, bone graft substitutes). Surface engineering: porous coatings, grit‑blast, plasma spray HA for osseointegration. Failure modes: wear (PE oxidation), corrosion (fretting, crevice, galvanic), fatigue fracture, ost...
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10Which of the following metals is known for its excellent biocompatibility and corrosion resistance in orthopae...
mcqWhat is the primary use of Ultra-high molecular weight polyethylene (UHMWPE) in orthopaedics?
mcqWhich type of corrosion occurs when there is localized damage on a metallic implant?
mcqWhat is the primary advantage of using hydroxyapatite as a coating for implants?
mcqWhat is a significant drawback of stress shielding caused by rigid implants?
mcqWhich polymer is primarily used as bone cement in orthopaedic surgeries?
mcqWhich of the following metals is most commonly used for plates and screws in fracture fixation?
mcqWhat is a common failure mode associated with polyethylene wear in joint prostheses?
mcqWhich of the following properties is NOT typically associated with ceramic biomaterials in orthopaedics?
mcqWhich of the following statements about titanium as an orthopaedic biomaterial is TRUE?