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. 2011 Aug;35(8):1157-64.
doi: 10.1007/s00264-010-1134-1. Epub 2010 Oct 21.

Failure following revision total knee arthroplasty: infection is the major cause

S M Javad Mortazavi  1 , Jeremy Molligan, Matthew S Austin, James J Purtill, William J Hozack, Javad Parvizi
Affiliations

Failure following revision total knee arthroplasty: infection is the major cause

S M Javad Mortazavi et al. Int Orthop. 2011 Aug.

Abstract

The objective of this study was to evaluate the survivorship of revision TKA and determine the reasons and predictors for failure. Between January 1999 to December 2005, 499 total knee arthroplasty revisions were performed on 474 patients. There were 292 (61.6%) women and 182 (38.4%) men. The average age at the time of index revision was 63.9 years. Revision was defined as surgery in which at least one component (tibial, patellar, femoral, or polyethylene) required exchange. At an average follow-up of 64.8 months (range, 24.1-111.6), and considering reoperation or re-revision as failure, there were 102 failures (18.3%). Infection was the major cause of failure (44.1%) followed by stiffness (22.6%), patellar or extensor mechanism problems (12.8%), periprosthetic fracture (5.9%), loosening (4.9%), haematoma formation (3.9%), malalignment (2.9%), and instability (2.9%). A total of 83% of failures were early (less than two years). Infection was the most common mechanism of failure of revision TKA. The majority of TKA revision failures tend to occur in the first two years after revision. The mode of failure of revision TKA appears to differ from the failure of primary TKA to some extent. Better understanding of current modes by which TKA revisions fail may enable surgeons to prevent these problems and improve outcomes for revision TKA.

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Figures

Fig. 1
Fig. 1
Persistence or recurrence rate of different failure mechanisms (columns indicate the number of knees)
Fig. 2
Fig. 2
Kaplan-Meyer survivorship: total cohort
Fig. 3
Fig. 3
Kaplan Meyer survivorship: septic vs. aseptic modes of failure
See this image and copyright information in PMC

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