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Andrew J Curley Department of Orthopedics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA

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Ethan R Ruh Department of Orthopedics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA

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Amisha Shah Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA

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Ashley E Disantis Department of Orthopedics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA

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April Krivoniak Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA

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Craig S Mauro Department of Orthopedics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA

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Michael P McClincy Department of Orthopedics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA

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Introduction The field of hip preservation has undergone significant advancement since Ganz popularized femoroacetabular impingement syndrome (FAIS) two decades ago ( 1 , 2 ). Since then, the understanding of non-arthritic hip pain, which

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Ioannis Gkiatas Orthopaedic Department, School of Medicine, University of Ioannina, Ioannina, Greece

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Anastasia Boptsi Orthopaedic Department, School of Medicine, University of Ioannina, Ioannina, Greece

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Dimitra Tserga Orthopaedic Department, School of Medicine, University of Ioannina, Ioannina, Greece

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Ioannis Gelalis Orthopaedic Department, School of Medicine, University of Ioannina, Ioannina, Greece

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Dimitrios Kosmas Orthopaedic Department, School of Medicine, University of Ioannina, Ioannina, Greece

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Emilios Pakos Orthopaedic Department, School of Medicine, University of Ioannina, Ioannina, Greece

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Introduction Developmental dysplasia of the hip (DDH), also known by the preceding term congenital dislocation of the hip (CDH), is one of the most prevalent congenital malformations. 1 , 2 DDH has a wide spectrum of anatomical

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Eustathios Kenanidis Academic Orthopaedic Department, Papageorgiou General Hospital, Aristotle University Medical School, Hellas, Greece
Center of Orthopaedics and Regenerative Medicine (C.O.RE.) – Center of Interdisciplinary Research and Innovation (C.I.R.I.) – Aristotle University Thessaloniki, Balkan Center, Hellas, Greece
Hôpital de la Tour, Geneva, Switzerland

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Konstantinos Kapriniotis Center of Orthopaedics and Regenerative Medicine (C.O.RE.) – Center of Interdisciplinary Research and Innovation (C.I.R.I.) – Aristotle University Thessaloniki, Balkan Center, Hellas, Greece

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Panagiotis Anagnostis Center of Orthopaedics and Regenerative Medicine (C.O.RE.) – Center of Interdisciplinary Research and Innovation (C.I.R.I.) – Aristotle University Thessaloniki, Balkan Center, Hellas, Greece

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Michael Potoupnis Academic Orthopaedic Department, Papageorgiou General Hospital, Aristotle University Medical School, Hellas, Greece
Center of Orthopaedics and Regenerative Medicine (C.O.RE.) – Center of Interdisciplinary Research and Innovation (C.I.R.I.) – Aristotle University Thessaloniki, Balkan Center, Hellas, Greece

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Panayiotis Christofilopoulos Hôpital de la Tour, Geneva, Switzerland

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Eleftherios Tsiridis Academic Orthopaedic Department, Papageorgiou General Hospital, Aristotle University Medical School, Hellas, Greece
Center of Orthopaedics and Regenerative Medicine (C.O.RE.) – Center of Interdisciplinary Research and Innovation (C.I.R.I.) – Aristotle University Thessaloniki, Balkan Center, Hellas, Greece

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probability of progressing to hip osteoarthritis (OA), usually in the third or fourth decade of life; 1 bilateral hip involvement reaches 20–30%. 2 , 8 The initial studies of total hip arthroplasty (THA) for the management of end-stage hip OA in SCD

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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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Introduction Total hip arthroplasty (THA) is a very successful operation, alleviating the symptoms of many different end-stage conditions of the hip joint ( 1 , 2 ). THA is recognized as one of the most successful operations of the 20th

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David González-Martín Orthopedic Surgery and Traumatology Service, Hospital Universitario de Canarias, Tenerife, Spain
Universidad de La Laguna, Tenerife, Spain

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José Luis Pais-Brito Orthopedic Surgery and Traumatology Service, Hospital Universitario de Canarias, Tenerife, Spain
Universidad de La Laguna, Tenerife, Spain

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Sergio González-Casamayor Orthopedic Surgery and Traumatology Service, Hospital Universitario de Canarias, Tenerife, Spain

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Ayron Guerra-Ferraz Orthopedic Surgery and Traumatology Service, Hospital Universitario de Canarias, Tenerife, Spain

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Jorge Ojeda-Jiménez Orthopedic Surgery and Traumatology Service, Hospital Universitario de Canarias, Tenerife, Spain
Universidad de La Laguna, Tenerife, Spain

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Mario Herrera-Pérez Orthopedic Surgery and Traumatology Service, Hospital Universitario de Canarias, Tenerife, Spain
Universidad de La Laguna, Tenerife, Spain

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Introduction Periprosthetic hip fracture (PPHF) is a potentially devastating complication following total hip arthroplasty (THA), with high first-year mortality (15–20%) when occurring in frail elderly patients ( 1 , 2 , 3 ). PPHFs are

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SaTia T. Sinclair Cleveland Clinic Foundation, Department of Orthopedic Surgery, Cleveland, Ohio, United States

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Ahmed K. Emara Cleveland Clinic Foundation, Department of Orthopedic Surgery, Cleveland, Ohio, United States

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Melissa N. Orr Cleveland Clinic Foundation, Department of Orthopedic Surgery, Cleveland, Ohio, United States

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Kara M. McConaghy Case Western Reserve University School of Medicine, Cleveland, Ohio, United States

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Alison K. Klika Cleveland Clinic Foundation, Department of Orthopedic Surgery, Cleveland, Ohio, United States

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Nicolas S. Piuzzi Cleveland Clinic Foundation, Department of Orthopedic Surgery, Cleveland, Ohio, United States

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Introduction Total joint arthroplasty is a common surgical procedure worldwide, with more than 1 million total hip arthroplasties (THAs) performed globally each year and several countries reporting nearly 100,000 annual total knee

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Mattia Loppini Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
Fondazione Livio Sciutto Onlus, Campus Savona – Università degli Studi di Genova, Savona, Italy

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Francesco Manlio Gambaro Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy

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Rob G H H Nelissen Landelijke Registratie Orthopedische Implantaten (Dutch Arthroplasty Register), ’s Hertogenbosch, The Netherlands
Department of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands

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Guido Grappiolo IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
Fondazione Livio Sciutto Onlus, Campus Savona – Università degli Studi di Genova, Savona, Italy

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Introduction Total hip arthroplasty (THA) is one of the most frequent and successful surgeries performed in the orthopedic field, nevertheless, a clear consensus on post-surgical management still lacks ( 1 ). The need to define a clear

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Maria Moralidou Institute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic Hospital, Stanmore, UK

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Anna Di Laura Institute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic Hospital, Stanmore, UK

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Johann Henckel Institute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic Hospital, Stanmore, UK

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Harry Hothi Institute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic Hospital, Stanmore, UK

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Alister J. Hart Institute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic Hospital, Stanmore, UK

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Introduction Over 3.1 million primary total hip arthroplasties (THA) have been performed in Europe since the mid-20th century. 1 Estimations based on current trends in the UK indicate a significant increase in primary THA, 2 with the

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Geert Meermans Bravis Hospital, Roosendaal, The Netherlands

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George Grammatopoulos The Ottawa Hospital, Ottawa, Ontario, Canada

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Moritz Innmann Heidelberg University Hospital, Heidelberg, Germany

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David Beverland Belfast Health and Social Care Trust, Belfast, UK

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Introduction Acetabular component orientation and position are important factors in the short- and long-term outcomes of total hip arthroplasty (THA). Therefore, it is crucial that the surgeon has accurate and precise control over the

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Claude B. Rieker Zimmer Biomet, Switzerland

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Introduction Although total hip arthroplasty (THA) has provided good results for over forty years, the choice of the optimal bearing surface still remains controversial. Tribology is defined as “the branch of science and technology that deals

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