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influential studies, one having a large impact of heterogeneity but a small weight on the effect size ( 32 ) and one heavily influenced both heterogeneity and pooled effect ( 33 ). A sensitivity analysis was subsequently made by excluding the two influential
IRCCS Galeazzi Orthopedic Institute, Milan, Italy
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IRCCS Galeazzi Orthopedic Institute, Milan, Italy
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deficiencies are restored on the acetabular side as commonly as they are bypassed on the femoral side, although in the hands of experienced surgeons cemented femoral impaction bone grafting restores effectively the bone stock and achieves a reliable fixation
Division of Orthopaedic Surgery and Musculoskeletal Trauma Care, Surgery Department, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
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external rotator function following THA while limiting impact on the rest of the hip function ( 21 ). Although statistically significant, these results had low determination coefficient values and assume that an increase in moment arm is equivalent to an
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article provides a review of the pathophysiology of the sclerotic zone in femoral head necrosis, the formation process, and the impact on femoral head necrosis. Pathology of femoral head necrosis and sclerotic zone formation The death of bone
IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan, Italy
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Fondazione Livio Sciutto Onlus, Campus Savona - Università degli Studi di Genova, Via Magliotto 2, Savona, Italy
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. Therefore, many different surgical strategies have been proposed such as stem with proximal press-fit or extended porous coating ( 6 ), monoblock or modular conical stem ( 7 , 8 ), stem combined with bone grafts ( 9 ), cemented stem, bone impaction grafting
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Department of Mechanical Engineering, University College London, UK
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Royal National Orthopaedic Hospital, Stanmore, UK.
Cleveland Clinic London, London, UK
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is in the range of 40–200 µm, and approximately 0.5 mm for EBM ( 11 ), and changing this dimension influences the level of intricacy and complexity of the structure of the porous coating, which in turn will impact the extent of osseointegration into
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aspherical femoral head protrudes into the acetabulum and induces shear forces which lead to the typical carpet-like delamination of cartilage and detachment of the labrum ( Fig. 1 ); 2 impaction type FAI (‘pincer type’) in which the femoral head abuts
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economic impact, are well documented ( 10 , 11 , 12 ). In addition to these factors, patient morbidity and mortality are also grossly affected ( 13 , 14 ). Two-stage revision arthroplasty is still considered as the gold standard for surgical treatment
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Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Portugal
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pincer type conflict. In this type of impingement, the hyper-coverage causes femoral lesions by impaction at the moment of maximum flexion. 8 This excessive marginal coverage could be generalized ( coxa profunda or protusio acetabuli ) or focal
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plates and lag screws. If combined with poor prognostic factors, such as subcephalic fracture of femoral neck in the elderly, major cartilage impaction, severe femoral head damage, total hip arthroplasty (THA) combined with simultaneous internal fixation