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Bengt Mjöberg Department of Orthopaedics, Lund University, Lund, Sweden

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(RSA) Multiple RSA studies of cemented and uncemented hip prostheses have shown that early prosthetic migration poses a risk of future failure; the larger the early migration, the greater the risk of future failure. 19 – 24 For example, in meta

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Alexis Nogier Service de Chirurgie Orthopédique, Clinique Trenel, Sainte-Colombe, France
Service de Chirurgie Orthopédique, Clinique Maussins-Nollet, Paris, France
Clinique Nollet, Paris, France

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Idriss Tourabaly Service de Chirurgie Orthopédique, Clinique Maussins-Nollet, Paris, France
Clinique Nollet, Paris, France

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Sonia Ramos-Pascual ReSurg SA, Nyon, Switzerland

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Jacobus H. Müller ReSurg SA, Nyon, Switzerland

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Mo Saffarini ReSurg SA, Nyon, Switzerland

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Cyril Courtin Service de Chirurgie Orthopédique, Clinique Trenel, Sainte-Colombe, France

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Introduction Primary total hip arthroplasty (THA) is a successful procedure and has demonstrated excellent mid- to long-term survival rates. 1 Off-the-shelf femoral stems have been the default choice due to considerations of cost and

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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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Introduction CT-based planning of total hip arthroplasty (THA) delivers 3D information regarding the patient’s anatomy which can be used to predict implant size and position ( 1 ). CT is also considered the gold standard for precise post

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Luca Pierannunzii Gaetano Pini Orthopedic Institute, Milan, Italy
IRCCS Galeazzi Orthopedic Institute, Milan, Italy

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Luigi Zagra Gaetano Pini Orthopedic Institute, Milan, Italy
IRCCS Galeazzi Orthopedic Institute, Milan, Italy

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Introduction Bone loss is a major concern of revision total hip arthroplasty (THA). While on the femoral side the problem is commonly solved by passing the defect through long stems seeking distal fixation in the healthy diaphysis, on the

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Vasileios F Pegios Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece
Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Balkan Center, Thessaloniki, Greece

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Eustathios Kenanidis Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece
Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Balkan Center, Thessaloniki, Greece

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Stavros Tsotsolis Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Balkan Center, Thessaloniki, Greece
Department of Trauma and Orthopaedics, Guy’s and St Thomas’ NHS Foundation Trust, London, UK

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Michael Potoupnis Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece
Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Balkan Center, Thessaloniki, Greece

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Eleftherios Tsiridis Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece
Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Balkan Center, Thessaloniki, Greece

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Introduction Total hip arthroplasty (THA) has proved to be an effective surgical operation with a high success rate, patient satisfaction and overall survival rates ( 1 ). A recent meta-analysis demonstrated 85.7% and 77.6% THA survival at 15

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Anna Bogdanova-Bennett Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK

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Amit Sagi Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK

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Vipin Asopa Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK

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Richard E. Field Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK

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David H. Sochart Academic Surgical Unit, South West London Elective Orthopaedic Centre, Epsom, UK

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Introduction Total hip replacement (THR) is a frequently performed surgical procedure and in England, Wales and Northern Ireland with more than 90,000 hip replacements performed in 2019. 1 Metallic implants used in orthopaedic surgery are

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Andreas Fontalis Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, UK
Academic Unit of Bone Metabolism, University of Sheffield Medical School, Sheffield, UK

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Eustathios Kenanidis Academic Orthopaedic Unit, Aristotle University Medical School, Papageorgiou General Hospital, Thessaloniki, Greece
Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI), Aristotle University of Thessaloniki, Thessaloniki, Greece

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Katharine Bennett-Brown Chelsea and Westminster Hospital NHS Foundation Trust, Chelsea, London, UK

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Eleftherios Tsiridis Academic Orthopaedic Unit, Aristotle University Medical School, Papageorgiou General Hospital, Thessaloniki, Greece
Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI), Aristotle University of Thessaloniki, Thessaloniki, Greece

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from the disease in the US alone. 4 Spasticity, tremors and contracture result in abnormal muscle tone around the hip, and altered forces exerted on the hip joint. 2 , 5 As a result, subluxation, degenerative diseases and secondary skeletal

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Khaled M. Sarraf St Mary’s Hospital, Imperial College Healthcare Trust, London, UK

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Ravi Popat St Mary’s Hospital, Imperial College Healthcare Trust, London, UK

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Kathryn L. Kneale St Mary’s Hospital, Imperial College Healthcare Trust, London, UK

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Rajarshi Bhattacharya St Mary’s Hospital, Imperial College Healthcare Trust, London, UK

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Manoj Ramachandran The Royal London Hospital, Barts Health NHS Trust, London, UK

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Pramod Achan The Royal London Hospital, Barts Health NHS Trust, London, UK

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Sammy A. Hanna The Royal London Hospital, Barts Health NHS Trust, London, UK

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Introduction Slipped capital femoral epiphysis (SCFE) is a disorder of the adolescent hip. The reported average annual incidence ranges from 8.8 to 10.8 per 100,000 in children between 9 and 16 years of age. 1 SCFE is characterized by

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Frederique J. Hafkamp Department of Medical and Clinical Psychology, Tilburg University, Tilburg, Netherlands
Center of Research on Psychological and Somatic Disorders (CoRPS), Tilburg University, Tilburg, Netherlands

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Taco Gosens Department of Orthopedics, Elisabeth-TweeSteden Hospital, Tilburg, Netherlands

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Jolanda de Vries Department of Medical and Clinical Psychology, Tilburg University, Tilburg, Netherlands
Center of Research on Psychological and Somatic Disorders (CoRPS), Tilburg University, Tilburg, Netherlands
Department of Medical Psychology, Elisabeth-TweeSteden Hospital, Tilburg, Netherlands

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Brenda L. den Oudsten Department of Medical and Clinical Psychology, Tilburg University, Tilburg, Netherlands
Center of Research on Psychological and Somatic Disorders (CoRPS), Tilburg University, Tilburg, Netherlands

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degree of dissatisfaction with the results of the replacement of the knee (i.e. total knee arthroplasty; TKA) or hip (i.e. total hip arthroplasty; THA). 4 , 10 – 14 Dissatisfaction with the results of surgery could concern, for example

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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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Introduction Total hip replacement has been the definitive form of treatment for end-stage hip arthritis for several decades and offers significant benefit to these patients by alleviating their pain and improving their mobility. The goal of

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