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Michela Saracco Department of Orthopaedics, ASL Napoli 2 Nord, Naples, Italy

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Vincenzo Ciriello Department of Surgery, Orthopaedic and Trauma Unit, S. Croce e Carle Hospital, Cuneo, Italy

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Fabio D’Angelo Division of Orthopaedics and Traumatology, ASST Dei Sette Laghi, Department of Biotechnology and Life Sciences (DBSV), University of Insubria, Varese, Italy

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

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Giuseppe Solarino Department of Translational Biomedicine and Neuroscience, School of Medicine, University of Bari Aldo Moro, AOU Consorziale ‘Policlinico’, Bari, Italy

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Giandomenico Logroscino Department Life, Health and Environmental Sciences—Mininvasive Orthopaedic Surgery, University of L’Aquila, L’Aquila, Italy

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Introduction Osteoarthritis (OA) is a degenerative disease that affects joints, especially hip and knee. Population aging leads to a progressive increase in the incidence of this disease. Half of the world's population aged 65 and older suffer

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Claude B. Rieker Zimmer Biomet, Switzerland

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  • Articulating components should minimise the generation of wear particles in order to optimize long-term survival of the prosthesis.

  • A good understanding of tribological properties helps the orthopaedic surgeon to choose the most suitable bearing for each individual patient.

  • Conventional and highly cross-linked polyethylene articulating either with metal or ceramic, ceramic-on-ceramic and metal-on-metal are the most commonly used bearing combinations.

  • All combinations of bearing surface have their advantages and disadvantages. An appraisal of the individual patient’s objectives should be part of the assessment of the best bearing surface.

Cite this article: Rieker CB. Tribology of total hip arthroplasty prostheses: what an orthopaedic surgeon should know. EFORT Open Rev 2016;1:52-57. DOI: 10.1302/2058-5241.1.000004.

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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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). 7 – 11 Boyle et al 12 did not record pre-operative scores, but used the Oxford Hip Score six months post-operatively, and found the mean in the SCFE group was 42.4 and the mean in the osteoarthritis (OA) group was 40.8. Complications

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Bülent Atilla Hacettepe University Faculty of Medicine, Ankara, Turkey

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Introduction Patients with untreated developmental dysplasia of the hip (DDH) may eventually develop secondary osteoarthritis, beginning in early adulthood. Arthroplasty is the main treatment of choice. In some countries, DDH is the main cause

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Markus S. Hanke Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland

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Florian Schmaranzer Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital of Bern, Inselspital, University of Bern, Bern, Switzerland

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Simon D. Steppacher Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland

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Till D. Lerch Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland

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Klaus A. Siebenrock Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland

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. 27 Evidence for a threshold of > 60° is mounting due to previously published data, showing that an alpha angle exceeding 60° is associated with clinical symptoms and the development of incident osteoarthritis. 28 , 29 During flexion, internal

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Stig Storgaard Jakobsen Department of Orthopaedic Surgery, Aarhus University Hospital, Denmark

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Søren Overgaard Orthopaedic Research Unit, Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Denmark

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Kjeld Søballe Department of Orthopaedic Surgery, Aarhus University Hospital, Denmark

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Ole Ovesen Orthopaedic Research Unit, Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Denmark

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Bjarne Mygind-Klavsen Department of Orthopaedic Surgery, Aarhus University Hospital, Denmark

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Christian Andreas Dippmann Section for Sports Traumatology M51, Department of Orthopaedic Surgery, Bispebjerg Hospital, Denmark

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Michael Ulrich Jensen Department of Orthopaedics, Aalborg University Hospital, Denmark

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Jens Stürup Department of Orthopaedics, National University Hospital, Denmark

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Jens Retpen Department of Orthopaedic Surgery, Copenhagen University Hospital, Gentofte, Denmark

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Background The interest in treating hip pathologies, such as developmental dysplasia of the hip (DDH), femoroacetabular impingement (FAI) and labral tears in patients without radiographic signs of osteoarthritis (OA), has rapidly increased

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Philippe Chiron Orthopédie Traumatologie, Secteur A, Batiment riquet, étage 5, CHU Toulouse, Toulouse Cedex 9, France

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Nicolas Reina Orthopédie Traumatologie, Secteur A, Batiment riquet, étage 5, CHU Toulouse, Toulouse Cedex 9, France

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palsy could be 4% ( 48 ). Only Type III Pipkin, Chiron IV (1 case A, 1 case B, 1 case C) ½ femoral head fractures led to emergency THR ( 1 ). The overall percentage of osteoarthritis is high, but osteoarthritis is relatively well tolerated with an

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Julia E J W Geilen Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen and Heerlen, the Netherlands

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Sem M M Hermans Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen and Heerlen, the Netherlands
Care and Public Health Research Institute (CAPHRI) Maastricht University, Maastricht, the Netherlands

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Ruud Droeghaag Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen and Heerlen, the Netherlands
Care and Public Health Research Institute (CAPHRI) Maastricht University, Maastricht, the Netherlands

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

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Emil H van Haaren Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen and Heerlen, the Netherlands

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Wouter L W van Hemert Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen and Heerlen, the Netherlands

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Introduction The prevalence of hip osteoarthritis (OA) has increased significantly because of improved management of chronic diseases and a prolonged life expectancy ( 1 ). The end-stage of OA can be reliably treated by total hip arthroplasty

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K Venkatadass Department of Orthopaedics & Spine Surgery, Ganga Hospital, Coimbatore, India

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V Durga Prasad Department of Orthopaedics & Spine Surgery, Ganga Hospital, Coimbatore, India

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Nasser Mohammed Mansor Al Ahmadi Alwaly Hospital, Aden, Yemen

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S Rajasekaran Department of Orthopaedics & Spine Surgery, Ganga Hospital, Coimbatore, India

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early as possible, which in turn will preclude or postpone the development of degenerative osteoarthritis (OA) of the hip ( 1 , 2 ). Despite extensive long-term studies, controversy still exists in all realms of surgical treatment of DDH ( 3 , 4 ). As

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Dominic Davenport Department of Trauma & Orthopaedics, Princess Royal University Hospital & King’s College Hospital, UK

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Venu Kavarthapu Department of Trauma & Orthopaedics, Princess Royal University Hospital & King’s College Hospital, UK

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Introduction Total hip arthroplasty (THA) is a common procedure for primary osteoarthritis but increasing numbers are also being performed for other pathologies such as secondary arthritis, inflammatory arthropathies and trauma. Estimates

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