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Published in: Clinical Orthopaedics and Related Research® 10/2012

01-10-2012 | Symposium: 2011 Musculoskeletal Infection Society

Better Function for Fusions Versus Above-the-knee Amputations for Recurrent Periprosthetic Knee Infection

Authors: Antonia F. Chen, MD, MBA, Nicholas C. Kinback, BS, Alma E. Heyl, LAS, RTR, CCRC, Edward J. McClain, MD, Brian A. Klatt, MD

Published in: Clinical Orthopaedics and Related Research® | Issue 10/2012

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Abstract

Background

Treatment of chronic periprosthetic joint infections (PJIs) after TKA is limited to fusions, above-the-knee amputations (AKAs), revision TKA, and antibiotic suppression and is often based on the patient’s medical condition. However, when both fusion and AKA are options, it is important to compare these two procedures with regard to function.

Questions/purposes

Do patients receiving a knee fusion for PJI after TKA have better function compared to patients receiving an AKA?

Methods

We retrospectively reviewed patients who were eligible for either fusion or AKA after PJI TKA. Thirty-seven patients underwent a fusion for PJIs after TKA between 1999 and 2010. Nine patients died postoperatively and eight patients were lost to followup, leaving 20 patients. Patients completed a specialized questionnaire about their fusion, and functional capability was assessed by the SF-12. We compared fusions to a previously published group of six patients who underwent AKA for recurrent PJI after TKA.

Results

For patients with fusion, community ambulators increased from five to 10 and nonambulators decreased from three to one. For patients with AKA, nonambulatory patients increased from zero to two, and community ambulators decreased from four to one. The SF-12 physical component summary measurements were higher for fusions (51) than for AKAs (26). The mental component summary was also higher in fusions (60) than in AKAs (44). Seventy percent of patients indicated they would undergo a fusion again instead of undergoing an amputation if they were presented with both options after undergoing their operation.

Conclusions

Patients receiving knee fusions for treating recurrent PJIs after TKA have better function and ambulatory status compared to patients receiving AKA.

Level of Evidence

Level III, therapeutic study. See the Instructions for Authors for a complete description of levels of evidence.
Appendix
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Metadata
Title
Better Function for Fusions Versus Above-the-knee Amputations for Recurrent Periprosthetic Knee Infection
Authors
Antonia F. Chen, MD, MBA
Nicholas C. Kinback, BS
Alma E. Heyl, LAS, RTR, CCRC
Edward J. McClain, MD
Brian A. Klatt, MD
Publication date
01-10-2012
Publisher
Springer-Verlag
Published in
Clinical Orthopaedics and Related Research® / Issue 10/2012
Print ISSN: 0009-921X
Electronic ISSN: 1528-1132
DOI
https://doi.org/10.1007/s11999-012-2322-7

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