Department of Orthopaedic Surgery, Vejle Hospital, Vejle, Denmark
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Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Lund University, Skåne University Hospital, Department of Orthopedics, Malmö, Sweden
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Department of Clinical Medicine, University of Bergen, Bergen, Norway
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Department of Clinical Medicine, University of Bergen, Bergen, Norway
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Department of Orthopaedics and Traumatology, Turku University Hospital, Turku, Finland
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Department of Surgery, Epworth HealthCare, University of Melbourne, Melbourne, Australia
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Centre for Hip Surgery, Wrightington Hospital, Wrightington, Wigan and Leigh NHS Trust, Lancashire, United Kingdom
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Orthopaedic Research Unit, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Odense, Denmark
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components used in THA in Sweden. Likewise, for acetabular components, ten different cup designs account for > 82% of the production. 12 Thein et al investigated design-related features of the three most commonly used stems in Sweden. Although the most
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) 2021 China Case series 71 patients (68 cup revisions + 68 stem revisions) THA converted to RTHA MAKO — Three types of registration techniques (extra acetabular bone surface based, liner based, metal shell-based or cage surface-based) on
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the 4 mm drill bit used for acetabular cup screws ( Fig. 4 ). These holes should be particularly placed superiorly in the anterior–superior and posterior–superior zones, from 10 to 2 o’clock on a clock face. The bone surface should be cleaned with
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(revision rate of 20% performed at an average of 3.7 years) secondary to aseptic loosening of the cup ( n = 4), femoral neck fractures ( n = 2) and unexplained pain ( n = 1) at a mean time of six years. Of the 24 failed THAs (revision rate of 10.6% with
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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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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Department of Trauma and Orthopaedics, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
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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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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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. Table 2 Surgical and implant characteristics. Reference Surgical Approach Type of fixation, n Type of stem Type of cup Type of femoral head/ bearing couple U C H RH N/A Aro et al. ( 30 ) N/A 49
Division of Orthopaedic Surgery and Musculoskeletal Trauma Care, Surgery Department, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
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Division of Orthopaedic Surgery and Musculoskeletal Trauma Care, Surgery Department, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
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Division of Orthopaedic Surgery and Musculoskeletal Trauma Care, Surgery Department, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
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length difference, and those of the cup and stem such as inclination/anteversion ( 10 , 11 , 12 ). One of these particularly crucial parameters that has received a great deal of research attention is offset. All three definitions of offsets are
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has been hypothesized that in THA the combination of different implants from different manufacturers can lead to adverse effects. 37 – 40 A typical example of mix & match would be combining an acetabular cup and liner from one company with a stem and
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Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
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Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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process and was associated with a nearly twofold increased risk of revision. 13 A Swedish register study did not find significant increased risk of early revision during the implementation phase of new cup designs. The authors claimed that less than 5
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own experience, we feel that this is especially true in certain situations – bone loss due to osteolysis around the acetabular cup of a total hip arthoplasty (THA) and the femoral component of the total knee arthroplasty (TKA). The underlying reason is
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flexion and internal rotation. The pain is also typical in the C-sign region and will often result in referred pain to the anterior part of the femur. The C-sign is when the patient cups their hands in a C-shape right above the greater trochanter to