Journal
ORTHOPADE
Volume 32, Issue 6, Pages 490-497Publisher
SPRINGER-VERLAG
DOI: 10.1007/s00132-003-0478-2
Keywords
total knee arthroplasty; infection; articulating spacer; two-stage exchange arthroplasty
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Two-stage reimplantation remains the gold standard in the treatment of late infected total knee arthroplasties. The reported disadvantages include difficult exposure at the time of reimplantation and less functional outcome by using static spacers. Patients who receive an articulating spacer retain a functional joint before second-stage reimplantation. This may reduce the disadvantages of static spacers (ligament contracture, extensor lag, arthrofibrosis). There is no difference in the success rates of eradicating infection (range: 90-96%). In a prospective study 24 consecutive patients were treated with an articulating spacer. The articulating spacer is made by cleaning and autoclaving the removed femoral component and the tibial polyethylene insert. These are reinserted during the same operation with antibiotic-loaded cement. The average time during which the spacer was in place was 16 weeks (range: 7-28 weeks). During an average follow-up period of 14.8 months (range: 5-33 months) one patient had a secondary reinfection. Use of an articulating spacer is economical and decreases the risk of complications in reimplantation with good functional outcome.
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