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An Articulating Spacer to Treat and Mobilize Patients with Infected Total Knee Arthroplasty

Authors
Journal
The Journal of Arthroplasty
0883-5403
Publisher
Elsevier
Publication Date
Volume
24
Issue
4
Identifiers
DOI: 10.1016/j.arth.2008.04.003
Keywords
  • Infected Tka
  • Tka Spacer
  • Revision Tka
Disciplines
  • Medicine

Abstract

Abstract This retrospective study analyzed 25 consecutive patients (25 knees) with chronic deep TKA infection. During 1997-2004, patients underwent two-stage articulating spacer surgery. The original femoral component was removed, autoclaved and replaced and a new polyethylene was utilized. The second- stage procedure occurred at a mean of 11 weeks (range: 4 to 39 weeks) after spacer insertion. Mobilization was encouraged between stages. All patients were assessed at a minimum of two years (mean 54 months; range: 24-108 months) post re-implantation, and Modified Hospital for Special Surgery (HSS) knee scores were calculated. Only one patient (4%) had re-infection. Average ROM before re-implantation was 5° to 112°, and 3° to 115° at latest follow-up. HSS scores averaged 91 (Range: 65-100) at latest follow-up. Two-stage re-implantation with an articulating spacer for infected TKA effectively treats infection and gives excellent knee motion between stages, and at mid- to long-term follow-up.

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