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The role of the ACL functional integrity has been strongly debated among UKA surgeons, as ACL insufficiency has been often associated with implant subluxation, polyethylene (PE) wear and early failure after UKA. 12 However, two different patterns
Upper Limb Unit, Department of Orthopedic Surgery, Amphia Hospital, Breda, The Netherlands
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ranging from 61% to 97%. 5 , 7 This raises questions of whether implant- or fixation-related factors may be related to early failure. Except in the case of silicone RHPs, that have previously proved to be biologically and biomechanically insufficient
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late failure of implants, and that the early adoption of innovations in either technique or implant design may lead to an increased risk of early failure. For this purpose, revision rates presented in studies and reported registry data were thoroughly
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foundations of TKA, as described by Insall et al, 10 was that although the native knee has more load transmitted through the medial compartment, this was to be avoided in a TKA as it would lead to uneven wear and early failure. To overcome this issue the
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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loosening following hip replacement procedures, owing primarily to the excessive muscle tone. 2 , 10 – 12 In addition to the disease influence on early failure of the prosthesis, higher fracture risk and poorer bone quality has been suggested. Several
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a faster increase in the micromovements and thus to result in an earlier failure than a femoral component with a short neck or in a valgus position. Similarly, an acetabular component with increased eccentricity (due to design or wear) is exposed to
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experiences with pyrocarbon implants showed encouraging outcomes. 5 - 11 At mid- and long-term follow-up, among satisfactory reports, early failures or component rupture were recorded. 12 - 19 Post-operative satisfaction and functional ability have
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friction in the artificial hip . Clin Orthop Relat Res 2003 : 127 – 138 . 10. Morlock MM Bishop N Rüther W Delling G Hahn M . Biomechanical, morphological, and histological analysis of early failures in
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( 14 ). From the 1970s to the 1980s, HRA, consisting of a metal femoral head with a polyethylene acetabulum, became popular. However, the early failure rate was very high due to various causes, including femoral neck fracture, femoral prosthesis
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myriad of reasons, including surgical technique and patient selection. 4 Mid-flexion instability owing to excessive joint line alterations, as well as poor patient selection for unicompartmental arthroplasty causing early failure, have contributed to
