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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
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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. Currently, two factors may compromise this achievement: hip range of motion (ROM) restrictions and hip instability. One option addressing these two problems is the dual mobility (DM) articulation. This very old French invention, used since 1974 by Gilles
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. Three main options that provide some protection against dislocation have emerged: constrained liners, dual mobility implants, and use of large diameter femoral heads. A literature review of each of these options follows with particular attention to the
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Introduction Dislocation remains a major challenge following total hip replacement (THR), occurring after 0.5% to 5% of primary and 5% to 30% of revision procedures. 1 – 4 Dual-mobility (DM) constructs are one option for patients deemed
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. Dual mobility Dual mobility constructs have been shown to reduce the risk of dislocation ( 51 ), allowing for greater joint ROM before impingement, more anatomical head size, and better head–neck ratio. The original monoblock designs have given way to
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
Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
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Region Västra Götaland, Sahlgrenska University Hospital, Department of Orthopaedics, Gothenburg, Sweden
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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Leeds Institute of Rheumatic Musculoskeletal Medicine (LIRMM), Chapel Allerton Hospital, Leeds, UK
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Leeds Institute of Rheumatic Musculoskeletal Medicine (LIRMM), Chapel Allerton Hospital, Leeds, UK
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Leeds Institute of Rheumatic Musculoskeletal Medicine (LIRMM), Chapel Allerton Hospital, Leeds, UK
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of PJI, yet the impact of revision surgery is profound. The inter-stage period of two-stage revision, in particular, has a significant negative impact on mobility and usually confers subsequent dependence on the patient. Other reported significant
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Department of Orthopaedics & Trauma, Royal Adelaide Hospital, Adelaide, South Australia, Australia
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, design variations exist between manufactures, a major point of difference being the configuration of the lag screw. Currently, the lag screw configuration of a femoral nail falls predominantly into three main design types: single screw, dual screw and
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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
