2012
DOI: 10.1590/s0102-36162012000600007
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Abstract: Objective: To evaluate the value of preoperative radiographic evaluations for total knee arthroplasty (TKA) revision. Methods: Thirty-one knees that were operated between 2006 and 2008, in a consecutive series of cases of TKA revision surgery were analyzed retrospectively. The following criteria were evaluated: number of wedges or structured bone grafts used for filling the bone defects; locations of the wedges and bone grafts used; and mean thickness of the polyethylene used. The AORI classification was previ… Show more

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Cited by 6 publications
(4 citation statements)
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“…In all cases included in the study, indication of the aforementioned implant was due to large bone defects with loss of ligament insertions on the femur or tibia after removal of previous primary or revision knee arthroplasty, considered type III, according the classification of bone defects in the knee developed by the Anderson Orthopedic Research Institute (AORI). 19 The cause of arthroplasty removal was septic loosening in four cases (36%), late infection in five cases (45%), instability in one case (9%), and one case (9%) of a periprosthetic fracture in a patient who already had septic loosening of TKA and was awaiting revision surgery. Of the four cases of loosening, three were already revision implants.…”
Section: Resultsmentioning
confidence: 96%
“…In all cases included in the study, indication of the aforementioned implant was due to large bone defects with loss of ligament insertions on the femur or tibia after removal of previous primary or revision knee arthroplasty, considered type III, according the classification of bone defects in the knee developed by the Anderson Orthopedic Research Institute (AORI). 19 The cause of arthroplasty removal was septic loosening in four cases (36%), late infection in five cases (45%), instability in one case (9%), and one case (9%) of a periprosthetic fracture in a patient who already had septic loosening of TKA and was awaiting revision surgery. Of the four cases of loosening, three were already revision implants.…”
Section: Resultsmentioning
confidence: 96%
“…The tissue-bank material was used because of the severity of tibial bone defect not being suitable for unstructured graft or metal wedges to achieve stability of the component, 10 and also to increase the bone stock, should another procedure become necessary in the future. An unconventional endoprosthesis was also not used although it reduces the duration of surgery and does not require tissue-bank material, and there are higher chances of complications associated with it, higher chances of mechanical failures in the long term, and also non-preservation of the bone stock for possible new procedures in the future and higher rate of medium- and long-term mechanical failure.…”
Section: Discussionmentioning
confidence: 99%
“…9 After debridement and collection of material for culturing, it was observed that there was a significant anteromedial cavity and peripheral defect in the proximal right tibia, which was classified as Anderson Orthopaedic Research Institute (AORI) type III, which means deficient methapyseal bone with bone loss compromising a major portion of the condyle or plateau. 10 Bone cuts were made in the femur, and the proximal tibia was prepared with a cut 2 mm below the lateral plateau. The femoral and tibial medullary canals were milled and prepared for the nails of the revision components to be inserted.…”
Section: Case Description and Methodsmentioning
confidence: 99%
“…Classification and description of bone defect in the femur and tibia based on the AORI classification[8,55,58]. Used with permission from[8].…”
mentioning
confidence: 99%