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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. Fig. 2 The three articulating surfaces in dual mobility (DM) cups: (a) and (b) demonstrate these three bearings as the large one (a.1) between the polyethylene (PE) liner and metallic shell, the small one (a.2) between the femoral head and liner
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between the prosthetic head and the highly polished inner surface of an outer metal shell provides two bearings ( Fig. 4 ). Fig. 4 The dual mobility concept: exploded view (a) and assembled view (b). The mobile polyethylene component between the
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. Tsikandylakis G Overgaard S Zagra L Kärrholm J . Global diversity in bearings in primary THA . EFORT Open Rev 2020 ; 5 : 763 – 775 .
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who were operated from 2002 through 2010 with cementless stemmed THA with either metal-on-metal bearings (11 567 patients, 35%) or metal-on-polyethylene bearings (21 111 patients, 65%). The cumulative incidence of revision at eight years of follow
School of Public Health, Faculty of Health and Medical Sciences, University of Adelaide, Australia
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-on-metal bearings had reportedly low-wear characteristics, and to use large-diameter femoral heads to reduce the risk of hip dislocation. The AOANJRR first raised concerns about all large-head metal-on-metal bearings for THR in the 2009 Annual Report 15 and a
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shell was an hydroxyapatite (HA)-coated press-fit cup coupled with a 28 mm head. There were no cases of mechanical cup loosening in either cohort. 20 Similarly, in a case control study comparing 105 DM and 215 standard bearings with a 22 mm head in
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importance in terms of subsequent risk of PJI. Ceramic bearings have been shown to have lower wear rates in comparison to cobalt-chrome and polyethylene 100 – 103 associated with lower levels of osteolysis. 100 – 107 Evidence from joint registries
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( 5 ), wear problems with highly crystalline phase-modified polyethylene ( 6 ) and toxicological surface contamination on porous-coated sockets ( 7 ). Innovative procedures such as hip resurfacing and large metal-on-metal hip joint bearings ( 8 ) ( Fig
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bearings, it has been theorized that a surgeon may tend to choose a tight knee and risk slight valgus overcorrection to avoid bearing dislocation in mobile UKA. This results in greater contact stresses and over-loading of the lateral compartment
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be an important factor in SCD. More specifically, some published studies 48 have found a higher risk of infection with metal-on-polyethylene (MoP) THA than ceramic-on-ceramic (CoC) bearings. We checked which bearing surfaces, and infection rate in
