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  • modular neck stem x
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Kavin Sundaram Cleveland Clinic Foundation, Department of Orthopedics Cleveland, Ohio, USA

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Ahmed Siddiqi Cleveland Clinic Foundation, Department of Orthopedics Cleveland, Ohio, USA

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Atul F. Kamath Cleveland Clinic Foundation, Department of Orthopedics Cleveland, Ohio, USA

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Carlos A. Higuera-Rueda Cleveland Clinic Florida, Department of Orthopedics Weston, Florida, USA

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transfemoral approach utilizing a non-modular stem and chisel perforation for all limbs of the osteotomy; however, this technique had high rates of stem subsidence and nonunion. Fink et al 32 reported higher rates of union using an osteotomy technique that

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Julie J. Willeumier Department of Orthopaedics, Leiden University Medical Centre, The Netherlands

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Yvette M. van der Linden Department of Orthopaedics, Leiden University Medical Centre, The Netherlands

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Michiel A.J. van de Sande Department of Orthopaedics, Leiden University Medical Centre, The Netherlands

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P.D. Sander Dijkstra Department of Orthopaedics, Leiden University Medical Centre, The Netherlands

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-term (> 6 mths) Short-term (< 6 mths) Long-term (> 6 mths) Acetabulum largely affected THP THP or pAMP + C THP THP or pAMP+ C Head / neck Hemi + C Hemi + C Hemi + C Hemi + C Inter / sub trochanteric

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Rory Cuthbert The Royal London Hospital, London, UK

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James Wong Barking, Havering and Redbridge University Hospitals, Romford, UK

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Philip Mitchell South West London Elective Orthopaedic Centre, Epsom, UK

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Parag Kumar Jaiswal Royal Free London NHS Foundation Trust, London, UK

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acetabular shell, the dual mobility cup (DMC) combines Charnley’s low-friction principle with the McKee–Farrar concept of an increased femoral head-to-neck ratio to maximize stability. 4 , 5 Despite promising results in reducing instability in France

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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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decreases head-neck taper corrosion Ceramic is known for its inert and electrically insulating properties. In an in vitro study analysing fretting corrosion between zirconia ceramic heads and cobalt-alloy stems compared with metal (cobalt-alloy) heads

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Heri Suroto Department of Orthopaedics & Traumatology, Dr. Soetomo General Hospital / Universitas Airlangga, Surabaya, Indonesia
These authors contributed equally to this work

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Brigita De Vega Institute of Orthopaedics and Musculoskeletal Science, University College London, London, UK
Cell & Tissue Bank-Regenerative Medicine Centre, Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
These authors contributed equally to this work

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Fani Deapsari Cell & Tissue Bank-Regenerative Medicine Centre, Dr. Soetomo General Academic Hospital, Surabaya, Indonesia

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Tabita Prajasari Department of Orthopaedics & Traumatology, Dr. Soetomo General Hospital / Universitas Airlangga, Surabaya, Indonesia

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Pramono Ari Wibowo Department of Orthopaedics & Traumatology, Dr. Soetomo General Hospital / Universitas Airlangga, Surabaya, Indonesia

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Steven K. Samijo Department of Orthopaedics and Traumatology Zuyderland Medisch Centrum, Heerlen, the Netherlands

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Suture, Ethicon Inc., USA). SMR™ Reverse modular shoulder system (Lima Corporate, Italy). Glenoid component • Diameter: 36 or 40 mm • CoR lateral offset: None • Inferior tilt: 10° Humeral component • Neck-shaft angle (inclination): 155° • Stem

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David Lin Trauma and Orthopaedic Surgery Department, Royal London Hospital, UK

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Alexander Charalambous Trauma and Orthopaedic Surgery Department, Royal London Hospital, UK

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Sammy A. Hanna Trauma and Orthopaedic Surgery Department, Royal London Hospital, UK

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femur. These were universally managed with cabling and restricted weight bearing post-operatively. In all cases, a standard, non-modular, stem was used. Eight of the hips demonstrated evidence of osteolysis secondary to polyethylene wear. This mainly

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Søren Overgaard Department of Orthopaedic Surgery and Traumatology, Copenhagen University Hospital, Copenhagen, Denmark
Department of Clinical Medicine, Faculty of Health & Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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Thomas M Grupp Aesculap AG Research & Development & Medical Scientific Affairs, Tuttlingen, Germany
Department of Orthopaedic and Trauma Surgery, Ludwig Maximilians University Munich, Musculoskeletal University Center Munich (MUM), Campus Grosshadern, Munich, Germany

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Rob GHH Nelissen Department of Orthopaedics, Leiden University Medical Center, Leiden, the Netherlands
Technical University Delft, Delft, the Netherlands

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Luca Cristofolini Department of Industrial Engineering, School of Engineering and Architecture, Alma Mater Studiorum - Università di Bologna, Bologna, Italy

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Anne Lübbeke Division of Surgery and Traumatology, Geneva University Hospitals and University of Geneva, Switzerland
Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK

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Marcus Jäger Department of Orthopaedics, Trauma & Reconstructive Surgery St. Marien Hospital Mülheim an der Ruhr & Chair of Orthopaedics and Trauma Surgery University of Duisburg–Essen, Essen, Germany

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Matthias Fink TÜV Süd Product Service GmbH, Clinical Centre of Excellence, Munich Germany

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Sabine Rusch Aesculap AG Research & Development & Medical Scientific Affairs, Tuttlingen, Germany

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Hassan Achakri Zimmer Biomet, Clinical, Regulatory & Quality Affairs, Winterthur, Switzerland

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Francesco Benazzo IUSS Pavia, Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy

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Dario Bergadano Medacta International SA, Medical Affairs, Castel San Pietro, Switzerland

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Georg N Duda Julius Wolff Institute and Center for Muskuloskeletal Surgery, Berlin Institute of Health at Charité Universitätsmedizin Berlin, Germany

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Christian Kaddick EndoLab Mechanical Engineering GmbH, Riedering, Germany

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Volkmar Jansson Department of Orthopaedic and Trauma Surgery, Ludwig Maximilians University Munich, Musculoskeletal University Center Munich (MUM), Campus Grosshadern, Munich, Germany

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Klaus-Peter Günther University Clinic Carl Gustav Carus, Center for Orthopaedic & Trauma Surgery, Technical University Dresden, Dresden, Germany

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Implant material corrosion Modular femoral neck fractures An appropriate follow-up is needed for the detection of different types of complications both early and late. Although evident failure modes will be detected in large patient

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Habeeb Bishi South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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Joshua B V Smith South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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Vipin Asopa South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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Richard E Field South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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Chao Wang South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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David H Sochart South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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–82) 20 30 Not reported Uncemented Not reported SPS family (Symbios) including 36 stems with modular neck (50 hips) Huo et al . (19) 59 53 57.4 (27–79) 29 24 DDH: 16; Primary OA: 16; Osteonecrosis: 16; Ankylosing spondylitis: 9

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Gösta Ullmark Länssjukhuset i Gävle, Sweden

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dislocation. Factors that decrease the head-to-neck ratio will increase the risk for dislocation. There are theoretical advantages in using larger head sizes with regard to stability. The improved head-to-neck ratio reduces component impingement and

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

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Francesco Benazzo Chirurgia Protesica ad Indirizzo Robotico, Fondazione Poliambulanza, Brescia, Italy

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Dante Dallari Reconstructive Orthopaedic Surgery and Innovative Techniques – Musculoskeletal Tissue Bank, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy

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Francesco Falez Department of Orthopaedics and Traumatology, ASL Roma 1, S. Filippo Neri Hospital, Rome, Italy

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Giuseppe Solarino Department of Basic Medical Sciences, Neuroscience and Sense Organs, Orthopaedic & Trauma Unit, School of Medicine, University of Bari Aldo Moro, AOU Consorziale ‘Policlinico’, Bari, Italy

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Rocco D’Apolito Hip Department, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

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Claudio Carlo Castelli FROM, Research Foundation Papa Giovanni XXIII Hospital, Bergamo, Italy

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provides an overview of the hip–spine relationship and its implications for patients undergoing total hip arthroplasty (THA). A crucial step in THA is to position the cup in such a way to obtain a stable joint without neck-cup impingement or edge loading

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