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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
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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
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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
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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
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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
Osteoarticular Surgery Research, La Paz Hospital Health Research Institute – IdiPAZ (La Paz University Hospital – Autonomous University of Madrid), Madrid, Spain
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(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
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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
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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
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. 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
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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
