This retrospective study compares treatment results of infected total knee arthroplasty with 2-stage exchange technique using 14 articulating spacers using metallic and polyethylene components (prosthetic group) and 33 static all-cement spacer (static group). For the prosthetic and static groups, treatment success rate was 71% and 67% at 58 months of follow-up, respectively, and not significantly different. The prosthetic group required less frequent extensile surgical approaches at the second-stage reimplantation. Range of motion was significantly improved in both groups, but there was no difference at latest follow-up between the groups. Of 14 in the prosthetic group, 4 (28%) did not undergo second-stage procedure. Antibiotic spacers consisting of prosthetic components can be a safe and effective treatment option for 2-stage revision total knee arthroplasty with equivalent infection control rates.
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Published online: April 16, 2012
Accepted: February 24, 2012
Received: October 30, 2011
The Conflict of Interest statement associated with this article can be found at doi:10.1016/j.arth.2012.02.023.
Supplementary material available at www.arthroplastyjournal.org.
© 2012 Elsevier Inc. Published by Elsevier Inc. All rights reserved.