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studies have reported lower dislocation rates with DM implants, most marked in revision arthroplasty. 4 , 8 , 9 Modular dual-mobility The original, ‘anatomical’ dual-mobility (ADM) constructs use a monoblock acetabular shell, lacking a central
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) the press-fit fixation of the dual mobility implant can be improved with the use of pegs and supra-acetabular screws, or (b) with a hook and flanges possibly combined with a modular cup for screw fixation and a Cobalt-Chrome liner. Various
Department of Surgery, Albany Health Campus, Albany, Australia
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Department of Surgery, Université de Montréal, Montréal, Québec, Canada
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Appar Mot 2005 ; 91 : 627 – 636 . 25. Matsen Ko LJ Pollag KE Yoo JY Sharkey PF . Serum metal ion levels following total hip arthroplasty with modular dual mobility components . J Arthroplasty 2016 ; 31
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risk of instability, Gilles Bousquet and Andrè Rambert introduced the concept of dual mobility (DM) in France in 1974. 3 Incorporating an additional bearing with the interposition of a mobile polyethylene layer between the prosthetic head and the
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distance for all positions and activities to occur with the dual-mobility bearing. The use of heads >32 mm has historically been limited by concerns about polyethylene wear. This shortcoming may be eliminated by using ceramic femoral heads on cross
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L . Modular dual-mobility cups using ceramic liners: an original solution for selected indications? Hip International 2020 30 59 – 65 . ( https://doi.org/10.1177/1120700020964976 ) 53 Reina N Pareek A Krych AJ Pagnano MW Berry DJ Abdel
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consequence of incompatible clearance. 88 In selected circumstances, particularly when more than one risk factor is present, (such as instability, allergy to metals, ceramic breakage) off-label use of modular ceramic dual mobility liners has been
Academic Unit of Bone Metabolism, University of Sheffield Medical School, Sheffield, UK
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Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI), Aristotle University of Thessaloniki, Thessaloniki, Greece
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Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI), Aristotle University of Thessaloniki, Thessaloniki, Greece
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et al, 2018 23 59/65 PD Primary THA: hydroxyapatite-coated, double-tapered titanium stem ( N = 38), Modular global stem ( N = 4). Revision THA: (optimum stem, N = 4). Cementless acetabular implant Primary and revision: dual-mobility
Region Västra Götaland, Sahlgrenska University Hospital, Department of Orthopaedics, Gothenburg, Sweden
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Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Odense, Denmark
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The Swedish Hip Arthroplasty Register, Gothenburg, Sweden
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clinical benefits when head sizes greater than 32 mm are used, and even adverse effects if big metallic heads are used. Lipped, inclined and constrained liners and dual mobility cups (DMC) have been available for decades to improve the stability of
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problem. In cases where one or more risk factors are present, dual mobility cups (DMC) have been a great advance in reducing the dislocation rate. 74 The DMC is not a new device, 75 but the advances are that the modern types of DMC with improved
