Novel multilayer coatings on polyethylene for acetabular devices
- Citation:
- Santos, V.a, Borges Ranito Pires Araújo Marques Tomás Fortunato Martins Nunes J. P. a C. "Novel multilayer coatings on polyethylene for acetabular devices." Materials Science Forum. 514-516 (2006): 868-871.
Abstract:
Total hip replacement is a common practice in every day clinical work. Artificial hip implants consist of a femoral component and an acetabular component. Nowadays the acetabular component is composed of a polymeric cup and a metallic shell. This study focuses the development of an innovative acetabular component substituting the metallic shell by a multilayer coating on the acetabular cup. A titanium coating was deposited onto ultra-high molecular weight polyethylene (UHMWPE) samples by physical vapour deposition (PVD), having an in situ pre-treatment with argon ion bombardment in order to optimize the adhesive strength by surface modification, followed by the deposition of a thin film of hydroxyapatite (HA) using rf magnetron sputtering technique, at room temperature. Results obtained seem to indicate that these multilayer coatings can be a viable alternative to the metallic shell, leading to the substitution of a two part for a one part acetabular component.
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