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Xavier du Cluzel de Remaurin Pediatric Orthopaedic Surgery Department, Paris Descartes University, Assistance Publique Hôpitaux de Paris (AP-HP), Necker Hospital, Paris, France
Arts et Métiers Institute of Technology, Université Sorbonne Paris Nord, IBHGC-Institut de Biomécanique Humaine Georges Charpak, HESAM Université, Paris, France

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Nejib Khouri Pediatric Orthopaedic Surgery Department, Paris Descartes University, Assistance Publique Hôpitaux de Paris (AP-HP), Necker Hospital, Paris, France

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Samuel Georges Pediatric Orthopaedic Surgery Department, Paris Descartes University, Assistance Publique Hôpitaux de Paris (AP-HP), Necker Hospital, Paris, France

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Laurent Gajny Arts et Métiers Institute of Technology, Université Sorbonne Paris Nord, IBHGC-Institut de Biomécanique Humaine Georges Charpak, HESAM Université, Paris, France

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Claudio Vergari Arts et Métiers Institute of Technology, Université Sorbonne Paris Nord, IBHGC-Institut de Biomécanique Humaine Georges Charpak, HESAM Université, Paris, France

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Alina Badina Pediatric Orthopaedic Surgery Department, Paris Descartes University, Assistance Publique Hôpitaux de Paris (AP-HP), Necker Hospital, Paris, France

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plane (APP), originally used by Lewinnek ( 45 ) for positioning the acetabular cup in prone total hip arthroplasty, was the most mentioned with 59 studies. The most anterior points of the two anterior superior iliac spines (ASIS) and a point midway

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Dongmei Wu School of Medicine, University of St. Andrews, St. Andrews, Fife, United Kingdom

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Rohan M Bhalekar ExplantLab, The Biosphere, Newcastle Helix, Newcastle-upon-Tyne, United Kingdom

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Jordan S Marsh School of Medicine, University of St. Andrews, St. Andrews, Fife, United Kingdom

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David J Langton ExplantLab, The Biosphere, Newcastle Helix, Newcastle-upon-Tyne, United Kingdom

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Alan J Stewart School of Medicine, University of St. Andrews, St. Andrews, Fife, United Kingdom

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, here, we demonstrated an example of by-products released from MoM hip implants ( Fig. 1 ). Generally, in a MoM hip replacement, wear debris is caused by wear and corrosion (e.g. tribocorrosion) at the head–cup interface and head–stem taper junction ( 19

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Leonardo Tassinari I Department of Orthopedic and Traumatology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
Department of Biomedical and Neuromotor Science-DIBINEM, University of Bologna, Bologna, Italy

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Alberto Di Martino I Department of Orthopedic and Traumatology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
Department of Biomedical and Neuromotor Science-DIBINEM, University of Bologna, Bologna, Italy

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Matteo Brunello I Department of Orthopedic and Traumatology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
Department of Biomedical and Neuromotor Science-DIBINEM, University of Bologna, Bologna, Italy

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Valentino Rossomando I Department of Orthopedic and Traumatology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
Department of Biomedical and Neuromotor Science-DIBINEM, University of Bologna, Bologna, Italy

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Francesco Traina Department of Biomedical and Neuromotor Science-DIBINEM, University of Bologna, Bologna, Italy
Orthopedics-Traumatology and Prosthetic Surgery and Hip and Knee Revision, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy

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Cesare Faldini I Department of Orthopedic and Traumatology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
Department of Biomedical and Neuromotor Science-DIBINEM, University of Bologna, Bologna, Italy

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Putananon et al. ( 47 ), that compared all the surgical approaches for THA. The positioning of the acetabular cup and the postoperative LLD, crucial for assessing the success of the surgical technique, were less emphasized in their report. Therefore, due

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Giuseppe Toro Department of Medical and Surgical Specialties and Dentistry, University of Campania ‘Luigi Vanvitelli’, Naples, Italy.
Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy.

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Antimo Moretti Department of Medical and Surgical Specialties and Dentistry, University of Campania ‘Luigi Vanvitelli’, Naples, Italy.

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Marco Paoletta Department of Medical and Surgical Specialties and Dentistry, University of Campania ‘Luigi Vanvitelli’, Naples, Italy.

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Annalisa De Cicco Department of Medical and Surgical Specialties and Dentistry, University of Campania ‘Luigi Vanvitelli’, Naples, Italy.

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Adriano Braile Department of Medical and Surgical Specialties and Dentistry, University of Campania ‘Luigi Vanvitelli’, Naples, Italy.

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Alfredo Schiavone Panni Department of Medical and Surgical Specialties and Dentistry, University of Campania ‘Luigi Vanvitelli’, Naples, Italy.

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surgery to the hip, the need for altered post-operative rehabilitation and a high rate of complications. 38 , 39 Some technical precautions may help to improve THA outcomes in these patients. 39 Indeed, the use of dual-mobility cups further

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Clemens Clar Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria

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Lukas Leitner Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), LMU University Hospital, Munich, Germany

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Amir Koutp Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria

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Georg Hauer Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria

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Laura Rasic Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria

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Andreas Leithner Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria

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Patrick Sadoghi Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria

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N Billaud A Masquefa T Pallaro J Fabre T & Tournier C . EOS-based cup navigation: randomised controlled trial in 78 total hip arthroplasties . Orthopaedics & Traumatology, Surgery & Research 2016 102 417 – 421 . ( https://doi.org/10

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Hanna Wellauer Department of Orthopaedic Surgery and Traumatology, HFR Fribourg Hospital, University of Fribourg, Fribourg, Switzerland
Division of Orthopaedics and Trauma Surgery, Cantonal Hospital Winterthur, Winterthur, Switzerland

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Roman Heuberger RMS Foundation, Bettlach, Switzerland

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Emanuel Gautier Department of Orthopaedic Surgery and Traumatology, HFR Fribourg Hospital, University of Fribourg, Fribourg, Switzerland

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Moritz Tannast Department of Orthopaedic Surgery and Traumatology, HFR Fribourg Hospital, University of Fribourg, Fribourg, Switzerland

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Hubert Steinke Institute for the History of Medicine, University of Bern, Bern, Switzerland

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Peter Wahl Division of Orthopaedics and Trauma Surgery, Cantonal Hospital Winterthur, Winterthur, Switzerland
Faculty of Medicine, University of Berne, Berne, Switzerland

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-methacrylate (PMMA) for anchoring of Austin Moore femoral head prosthesis, inspired by techniques used in dentistry ( 8 ). In 1960, he added a cup to replace the acetabulum ( 5 ). He used stainless steel as a material for the stem, and, to reduce wear and torque, he

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Adrian J. Cassar-Gheiti Cappagh National Orthopaedic Hospital, Dublin, Ireland

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Rosie McColgan Galway University Hospital, Galway, Ireland

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Martin Kelly Connolly Hospital, Orthopaedic Department, Dublin, Ireland

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Theresa M. Cassar-Gheiti Cappagh National Orthopaedic Hospital, Dublin, Ireland

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Paddy Kenny Cappagh National Orthopaedic Hospital, Dublin, Ireland
Connolly Hospital, Orthopaedic Department, Dublin, Ireland

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Colin G. Murphy Galway University Hospital, Galway, Ireland

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-Synthes, Warsaw, Indiana, USA). The cumulative revision rates were dependent on the combination of stem and cup used. Certain combinations had higher revision rates than others, such as Exeter V40 – Exeter contemporary had a higher revision rate (4.5%) than the

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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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by comparisons of CoC with MoP. The high-granularity commissioned NJR data exploration revealed that, after adjustment for gender, age group, ASA class, as well as stem and cup fixation, the observed expected ratio of infections was 0.88 with

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Angelika Ramesh Department of Mechanical Engineering, University College London, United Kingdom
Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom

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Anna Di Laura Department of Mechanical Engineering, University College London, United Kingdom
Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom

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Johann Henckel Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom

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Alister Hart Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom
Institute of Orthopaedics and Musculoskeletal Science, University College London, United Kingdom
Cleveland Clinic London, United Kingdom

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measurements: Methods and results . Journal of Arthroplasty 2007 22 812 – 817 . ( https://doi.org/10.1016/j.arth.2006.10.001 ) 25. Hohmann E Bryant A & Tetsworth K . Accuracy of acetabular Cup positioning using imageless navigation . Journal of

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Giuseppe Solarino Department of Neuroscience and Organs of Sense, Orthopaedics Section, Faculty of Medicine and Surgery, University of Bari, Bari, Italy

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Giovanni Vicenti Department of Neuroscience and Organs of Sense, Orthopaedics Section, Faculty of Medicine and Surgery, University of Bari, Bari, Italy

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Massimiliano Carrozzo Department of Neuroscience and Organs of Sense, Orthopaedics Section, Faculty of Medicine and Surgery, University of Bari, Bari, Italy

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Guglielmo Ottaviani Department of Neuroscience and Organs of Sense, Orthopaedics Section, Faculty of Medicine and Surgery, University of Bari, Bari, Italy

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Biagio Moretti Department of Neuroscience and Organs of Sense, Orthopaedics Section, Faculty of Medicine and Surgery, University of Bari, Bari, Italy

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

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ALTR 73 (36%) Periprosthetic fractures 5 (2.5%) Pain 2 (1%) Ollivier et al 25 2015 170 Deep infections 3 (1.7%) Periprosthetic fractures 2 (1.1%) Impingement 2 (1.1%) Silverton et al 26 2014 152 2 taper corrosion 1 cup

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