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Jun Zhang, Erhu Li, and Yuan Zhang

requires a comprehensive understanding of the design rationale of a revision system, which is characterized by a high degree of modularity, offset adjustment, metallic augmentation, stem biomechanics and fixation methods, and grade of constraint, according

Emmanuel Thienpont

eversion or sliding it on the side. Removal of the modular polyethylene should be performed as a standard surgical step before extending the soft tissues releases necessary to open the joint. Quadriceps snip If adequate exposure is not achieved with

Hee-Nee Pang, Hamid Rahmatullah Bin Abd Razak, Stephen Petis, Douglas D. R. Naudie, and Steven J. MacDonald

80% to 90% of all revisions. 5 - 8 Modularity for TKA was first introduced in the 1980s. It conferred a number of advantages, such as intra-operative flexibility, ability to use porous coating and stems, and the possibility for late liner

Gilles Pasquier, Matthieu Ehlinger, and Didier Mainard

rotation and high modularity have improved the outcomes for hinged knee implants. 9 While there is abundant literature on the outcomes of TKA revision, only a few reports focus on the benefits of hinged implants in revision surgery, and even fewer

E. Carlos Rodríguez-Merchán

References Waldius 1, 2 Guepar 3–8 Kinematic 9–12 Blauth 13, 14 Rotaflex 15, 16 Modular rotating hinge design 17 Modular rotating-platform hinge 18, 19 S-ROM mobile-bearing hinge prosthesis

E. Carlos Rodríguez-Merchán, Primitivo Gómez-Cardero, and Carlos A. Encinas-Ullán

(polymethylmethacrylate) with or without reinforcing screws; modular TKA systems including optional stems, wedges, metal augments and cones made of porous metals; orthopaedic salvage systems such as megaprostheses and tumour prostheses; autografts; and morselized or

E. Carlos Rodríguez-Merchán and Primitivo Gómez-Cardero

rapid recovery and good clinical results. Nonetheless, they also had relatively high percentages of bearing dislocation and aseptic loosening. All-polyethylene UKA Whether all-poly tibial components give similar results to metal-backed modular

Carlos A. Encinas-Ullán, Primitivo Gómez-Cardero, Juan S. Ruiz-Pérez, and E. Carlos Rodríguez-Merchán

mechanics of movement and diminished stress transmission, although suboptimal instrumentation and implant design led to high complication rates. Third-generation RH-TKA modular systems evolved further, incorporating modular stems and diaphyseal anchorage

Paolo Salari and Andrea Baldini

. The first step is the modular polyethylene liner removal that can be easily performed with the use of a lever (i.e. the tip of a standard Hohmannretractor) or cutting the pivot in rotating implants. Implant-specific instrumentations have to be used in

Jan Victor

micromotion in modular implants, have greatly reduced this problem. Today infection, instability, malalignment, stiffness and dissatisfaction with the outcome of the procedure are the main drivers for early revision. 1 In particular, this is a more