Orthonotes
Orthonotes
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Orthopaedic Implants — Materials & Corrosion

Common alloys: 316L stainless, cobalt‑chrome, titanium (Ti‑6Al‑4V). Corrosion mechanisms: fretting at modular junctions, crevice under plates, galvanic with dissimilar metals. Clinical sequelae: metal ion release, ALVAL, osteolysis, trunnionosis in THA. Prevention: material pairing, surface finish, avoiding fluid‑filled crevices, firm taper assembly.

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Common alloys: 316L stainless, cobalt‑chrome, titanium (Ti‑6Al‑4V). Corrosion mechanisms: fretting at modular junctions, crevice under plates, galvanic with dissimilar metals. Clinical sequelae: metal ion release, ALVAL, osteolysis, trunnionosis in THA. Prevention: material pairing, surface finish, avoiding fluid‑filled crevices, firm taper assembly.
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