title: Oxidized zirconium on ceramic; Catastrophic coupling.
abstract: Oxidized zirconium (Oxinium™; Smith & Nephew, Memphis, TN, USA) articulated with polyethylene in total hip arthroplasty (THA) appeared to have the potential to reduce wear dramatically. The thermally oxidized metal zirconium surface is transformed into ceramic-like hard surface that is resistant to abrasion. The exposure of soft zirconium metal under hard coverage surface after the damage of oxidized zirconium femoral head has been described. It occurred following joint dislocation or in situ succeeding disengagement of polyethylene liner. We reported three cases of misuse of Oxinium™ (Smith & Nephew, Memphis, TN, USA) heads. These three cases resulted in catastrophic in situ wear and inevitable failure although there was no advice, indication or recommendation for this use from the manufacturer.
authors.affiliation: Acibadem University, Faculty of Medicine, Acıbadem Maslak Hospital, Department of Orthopedics and Traumatology, Büyükdere Cad 40, Maslak 34457, Istanbul, Turkey. Electronic address: vahitemre@gmail.com.
authors.forename: V E
authors.initials: VE
authors.lastname: Ozden
authors.affiliation: Istanbul Umraniye Research Hospital, Elmalıkent Mah, Adem Yavuz Cad. No: 1, 34764 Umraniye, Istanbul, Turkey.
authors.forename: N
authors.initials: N
authors.lastname: Saglam
authors.affiliation: Acibadem University, Faculty of Medicine, Acıbadem Maslak Hospital, Department of Orthopedics and Traumatology, Büyükdere Cad 40, Maslak 34457, Istanbul, Turkey.
authors.forename: G
authors.initials: G
authors.lastname: Dikmen
authors.affiliation: Acibadem University, Faculty of Medicine, Acıbadem Maslak Hospital, Department of Orthopedics and Traumatology, Büyükdere Cad 40, Maslak 34457, Istanbul, Turkey.
authors.forename: I R
authors.initials: IR
authors.lastname: Tozun
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D005260:Female; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010084:Oxidation-Reduction; D020959:Polyethylene; D011474:Prosthesis Design; D011475:Prosthesis Failure; D015040:Zirconium
chemical_list: D020959:Polyethylene; D015040:Zirconium
keywords: Hip arthroplasty; Oxidized zirconium on ceramic; Oxinium™