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three studies ( n = 94) specified the bearing surfaces used. There were 28 metal-on-polyethylene, 23 ceramic-on-ceramic, nine ceramic-on-polyethylene and 35 metal-on-metal. The demographics of the patients in the studies are summarized in Table 1
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Department of Occupational Therapy, Shu-Zen Junior College of Medicine and Management, Kaohsiung City, Taiwan
Department of Biomedical Engineering, I-Shou University, Kaohsiung City, Taiwan
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Department of Pharmacy, School of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
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acetabular component, a network meta-analysis ( 57 ) with 77 included studies demonstrated that newer implant combinations, defined by bearing surface materials (metal-on-polyethylene, ceramic-on-polyethylene, ceramic-on-ceramic, or metal-on-metal), head size
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Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, The Netherlands
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Department of Safety & Security Science, Delft University of Technology, Delft, The Netherlands
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in serum or urine were excluded. Moreover, studies without aseptic loosening as an outcome as well as studies among patients with an infection, tumor reconstructions, or metal-on-metal implants were excluded. In addition, animal studies and in vitro
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orientation and position of the implanted cup. Improper acetabular orientation and position can lead to: (i) limited range of motion ( 1 ); (ii) increased dislocation rate ( 2 ); (iii) accelerated wear of polyethylene ( 3 ), metal-on-metal ( 4 ) and ceramic
Academic Orthopaedic Department, Papageorgiou General Hospital, Aristotle University Medical School, Thessaloniki, Greece
Centre of Orthopaedics and Regenerative Medicine (CORE) – Centre of Interdisciplinary Research and Innovation (CIRI) – Aristotle University Thessaloniki, Greece
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Gennimatas General Hospital, Cholargos, Athens, Greece
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. J Arthroplasty 2014 ; 29 : 383 – 386 . 21. Berber R Khoo M Cook E et al. Muscle atrophy and metal-on-metal hip implants: a serial MRI study of 74 hips . Acta Orthop 2015 ; 86 : 351 – 357 . 22
Department of Orthopaedic Surgery, Vejle Hospital, Vejle, Denmark
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Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Odense, Denmark
Orthopaedic Research Unit, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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with ceramic-on-ceramic and metal-on-polyethylene bearings . Acta Orthop 2015 ; 86 : 477 - 484 . 10. Smith AJ Dieppe P Vernon K Porter M Blom AW . Failure rates of stemmed metal-on-metal hip
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CoC. But as previously (with a ceramic cup) this may necessitate removal of the stem to implant a new ceramic head on a new taper. A metal-on-metal bearing surface should be avoided because the ceramic is harder than metal and rapid three-body abrasive
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– illustrated by a C-shaped bubble on plain radiographs. Critically, the resultant metal-on-metal articulation between the inner femoral head and the acetabular socket causes rapid wear, release of metal ions and local soft-tissue metallosis. Meanwhile the
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particularly when modular neck stems were paired with metal-on-metal articulating bearing, which was reported to increase revision rates even further. 45 The authors conclude that it remains to be established whether this is the result of implant taper
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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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-B Yoon T-R . Total hip arthroplasty using large-diameter metal-on-metal articulation in patients with neuromuscular weakness . J Arthroplasty 2014 ; 29 : 797 – 801 . 34. Brown TS Tibbo ME Arsoy D et al
