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(single radius, multi radius, gradually reducing radius and medial pivot)? Does trochlea design affect patellofemoral kinematics and outcomes? Do ultracongruent inserts provide equivalent anteroposterior stability to posterior stabilized
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2002 ; 404 : 7 - 13 . 3 Abdel MP , Morrey ME , Jensen MR , Morrey BF . Increased long-term survival of posterior cruciate-retaining versus posterior cruciate-stabilizing total knee replacements . J Bone Joint
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with respect to the trochlea had no effect. Another study of five cadaveric knees looked at four different conditions: normal knee with patella replaced, cruciate-retaining, condylar-stabilizing, and posterior-stabilized TKAs using the Stryker
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-related factors, such as younger age and high activity. Empirically, most mechanical or septic loosening can be addressed using standard posterior-stabilized (PS) prostheses combined with defect or fixation augmentation. However, ligament insufficiency and bone
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). There were 20 cruciate-retaining (CR) TKAs (24%), 29 cruciate-sacrificing/posterior stabilized (CS/PS) TKAs (35%), 11 constrained condylar knee (CCK) TKAs (14%), and 22 rotating hinge (RHK) TKAs (27%). Ipsilateral quadriceps muscle power was assessed
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, which does not allow the patella to engage the trochlea grove at approximately 25° of flexion. The aim of trochleoplasty is to create a recentralized groove, correcting the trochlear depth abnormality and thus stabilizing the patella by a better
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. Particularly, it is important to address possible intra-operative difficulties, including the need for an increased constraint. In native stiff knee, posterior cruciate ligament is usually sacrificed, and a posterior stabilized insert can be enough to achieve
Personalized Arthroplasty Society, Atlanta, Georgia, USA
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Nuffield Orthopaedic Centre, Headington, Oxford, UK
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Shamir Medical Center, Zriffin, Israel
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Département de Chirurgie, Université de Montréal, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada
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tibial slope: - slightly reduce the large native tibial slope when using postero-stabilized TKA designs. The increased flexion gap resulting from the resection of the posterior cruciate ligament would prevent tightness in flexion - restore native slope
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may resect additional distal femur to stabilize the knee in extension if a fixed flexion contracture is present. ‘Mephistophelian’ is trying to restore the joint line with a millimetre accuracy at the anatomic joint line height. Soft tissue status
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-establish the tibial platform, stabilize the knee in flexion, and finally stabilize the knee in extension, can be a valuable technique to ensure correct joint line position. 17 Intraoperatively, there are several useful anatomical landmarks, including the
