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, osteolysis.
Which of the following metals is known for its excellent biocompatibility and corrosion resistance in orthopaedic implants?
What is the primary use of Ultra-high molecular weight polyethylene (UHMWPE) in orthopaedics?
Which type of corrosion occurs when there is localized damage on a metallic implant?
What is the primary advantage of using hydroxyapatite as a coating for implants?
What is a significant drawback of stress shielding caused by rigid implants?
Which polymer is primarily used as bone cement in orthopaedic surgeries?
Which of the following metals is most commonly used for plates and screws in fracture fixation?
What is a common failure mode associated with polyethylene wear in joint prostheses?
Which of the following properties is NOT typically associated with ceramic biomaterials in orthopaedics?
Which of the following statements about titanium as an orthopaedic biomaterial is TRUE?
