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Philippe Hernigou Hôpital Henri Mondor, University of Paris-Est, France

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François Roubineau Hôpital Henri Mondor, University of Paris-Est, France

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Charlie Bouthors Hôpital Henri Mondor, University of Paris-Est, France

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Charles-Henri Flouzat-Lachaniette Hôpital Henri Mondor, University of Paris-Est, France

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Introduction Ceramic-on-Ceramic (CoC) articulating surfaces are well known to combine properties of a high-strength, scratch-resistant material with very low coefficients of friction averaging 0.02, mimicking those of a normal joint. Their

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Carsten Perka Center for Musculoskeletal Surgery, Charité Medical University Center, Berlin, Germany

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Maziar Mohaddes Hässleholms Hospital, Region Skåne, Hässleholm, Sweden
Orthopedics, Faculty of Medicine, Department of Clinical Sciences, Lund University, Malmö, Sweden

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Luigi Zagra Hip Department, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

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Axel Ekkernkamp BG Klinikum Unfallkrankenhaus Berlin gGmbH, Berlin, Germany
BG Kliniken – Klinikverbund der gesetzlichen Unfallversicherung gGmbH, Berlin, Germany

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Niklas Keller Harding Center for Risk Literacy, University of Potsdam, Faculty of Health Sciences, Potsdam, Germany

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Dirk Stengel BG Kliniken – Klinikverbund der gesetzlichen Unfallversicherung gGmbH, Berlin, Germany

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-highly cross-linked polyethylene with or without antioxidants, HXLPE) and hard-on-hard (i.e. ceramic-on-ceramic) pairings are the most common in use, all of which have distinct risk–benefit profiles ( 7 , 8 ). The idea of using alumina ceramics as a fabric

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Claude B. Rieker Zimmer Biomet, Switzerland

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required. Recently, the Australian National Joint Replacement Registry reported a significantly lower revision rate for HXLPE compared with standard PE for metal-on-HXLPE, and the 14-year cumulative revision rate decreased from 9.9% to 5.4%. For ceramic-on

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Didier Hannouche Department of Orthopaedic Surgery and Traumatology, Geneva University Hospital, Switzerland

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Matthieu Zingg Department of Orthopaedic Surgery and Traumatology, Geneva University Hospital, Switzerland

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Hermes Miozzari Department of Orthopaedic Surgery and Traumatology, Geneva University Hospital, Switzerland

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Remy Nizard Department of Orthopaedic Surgery, AP-HP, Hôpital Lariboisière, Paris University, Paris, France

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Anne Lübbeke Department of Orthopaedic Surgery and Traumatology, Geneva University Hospital, Switzerland

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and Japan 20 in terms of prosthetic hip design, material quality and fixation methods. The introduction of Morse taper technology to orthopaedic surgery in 1974 was a key step for successful attachment of the ceramic head on the femoral component

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Luigi Zagra Hip Department, IRCCS Istituto Ortopedico Galeazzi, Italy

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Enrico Gallazzi Hip Department, IRCCS Istituto Ortopedico Galeazzi, Italy

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heads (MoPE or CoPE). XLPE has been reported with less wear (MoXLPE or CoXLPE), but also with a decrease in mechanical proprieties; ceramic-on-ceramic (CoC) is related to much less wear and the highest bio-tolerability but carries the risk of breakage

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Georgios Tsikandylakis Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
Region Västra Götaland, Sahlgrenska University Hospital, Department of Orthopaedics, Gothenburg, Sweden

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Soren Overgaard The Danish Hip Arthroplasty Register, Aarhus, Denmark
Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Odense, Denmark
Institute of Clinical Research, University of Southern Denmark, Odense, Denmark

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Luigi Zagra Hip Department, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

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Johan Kärrholm Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
Region Västra Götaland, Sahlgrenska University Hospital, Department of Orthopaedics, Gothenburg, Sweden
The Swedish Hip Arthroplasty Register, Gothenburg, Sweden

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standard in many countries. 4 Introduction of metal-on-metal articulations, ceramic-on-ceramic and, above all later on, highly cross-linked polyethylene opened the possibility for the use of bigger head sizes, but recent studies have suggested limited

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J R W Crutsen Department of Orthopaedic Surgery, VieCuri Medical Center, Venlo, the Netherlands

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M C Koper Department of Orthopaedic Surgery, Reinier HAGA Orthopaedic Center, Zoetermeer, the Netherlands

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J Jelsma Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen-Heerlen, the Netherlands

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M Heymans Zuyderland Academy, Centre of Knowledge and Information (KIC), Zuyderland Medical Centre, Sittard-Geleen, the Netherlands

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I C Heyligers Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen-Heerlen, the Netherlands
School of Health Professions Education (SHE), Maastricht University, Maastricht, the Netherlands

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B Grimm Luxembourg Institute Health, Human Motion, Orthopaedics, Sports Medicine, Digital Methods (HOSD), Luxembourg, Luxembourg

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N M C Mathijssen Department of Orthopaedic Surgery, Reinier HAGA Orthopaedic Center, Zoetermeer, the Netherlands

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M G M Schotanus Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen-Heerlen, the Netherlands
School of Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands

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(MoM, CoC, metal-on-polyethylene (MoP) and ceramic-on-polyethylene (CoP)) and any type of hip arthroplasty design (hip resurfacing arthroplasty (HRA), short stem hip arthroplasty, and ‘conventional’ stemmed total hip arthroplasty, both uncemented and

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Michael M. Morlock TUHH Hamburg University of Technology, Hamburg, Germany.

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Robert Hube OCM Clinic Munich, Munich, Germany

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Georgi Wassilew Department for Orthopaedics and Orthopaedic Surgery, University of Greifswald, Greifswald, Germany

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Felix Prange TUHH Hamburg University of Technology, Hamburg, Germany.

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Gerd Huber TUHH Hamburg University of Technology, Hamburg, Germany.

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Carsten Perka Center for Musculoskeletal Surgery, Orthopedic Department, Charité – Universitätsmedizin Berlin, Berlin, Germany

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an situation, even so it might look corroded due to the Co and Cr debris from the inside head taper. After careful cleaning it is possible in most cases to maintain the stem and put on a ceramic head with a Ti-alloy adapter sleeve. 54 Both CoCr

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Georgios Tsikandylakis Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden
Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
Swedish Hip Arthroplasty Register, Gothenburg, Sweden

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Maziar Mohaddes Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden
Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
Swedish Hip Arthroplasty Register, Gothenburg, Sweden

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Peter Cnudde Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
Swedish Hip Arthroplasty Register, Gothenburg, Sweden
Department of Orthopaedics, Prince Philip Hospital, HDUHB, Wales

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Antti Eskelinen Coxa Hospital for Joint Replacement, Tampere, Finland
Finnish Arthroplasty Register, Helsinki, Finland

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Johan Kärrholm Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden
Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
Swedish Hip Arthroplasty Register, Gothenburg, Sweden

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Ola Rolfson Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden
Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
Swedish Hip Arthroplasty Register, Gothenburg, Sweden

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review, the use of 28 mm or greater head diameter in THA with metal-on-XLPE (MoXLPE), ceramic-on-XLPE (CoXLPE) and ceramic-on-ceramic (CoC) bearings is analyzed with respect to range of movement, dislocation, functional outcomes, wear, taper corrosion and

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Philip F. Dobson Trauma and Orthopaedic Surgery, Royal Victoria Infirmary, Newcastle, UK

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Michael R. Reed Trauma and Orthopaedic Surgery, Royal Victoria Infirmary, Newcastle, UK

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suggests that ceramic-on-ceramic (CoC) bearing surfaces may be associated with lower levels of infection compared with more commonly used metal-on-polyethylene (MoP) articulations. 108 – 110 An analysis of 623,253 patients who underwent primary hip

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