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Related Experiment Videos

[Arthrodesis following knee arthroplasty].

U Munzinger1, J Knessl, N Gschwend

  • 1Klinik Wilhelm Schulthess, Zürich.

Der Orthopade
|August 1, 1987
PubMed
Summary

Arthrodesis can effectively fuse infected knee joints after total knee arthroplasty failure. Compression arthrodesis with an AO plate yielded better fusion rates than external fixation.

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Area of Science:

  • Orthopedic surgery
  • Infectious disease in orthopedic implants

Context:

  • Failed total knee arthroplasty (TKA) often necessitates revision or salvage procedures.
  • Infection following TKA presents a significant challenge, frequently leading to implant failure.
  • Arthrodesis (joint fusion) is a salvage option for infected TKAs when revision arthroplasty is not feasible.

Purpose:

  • To evaluate the efficacy of arthrodesis in managing infected failed total knee arthroplasties.
  • To compare the outcomes of compression arthrodesis versus external fixation for achieving solid fusion.

Summary:

  • This study reviewed 44 cases of infected failed TKAs treated with arthrodesis between 1970 and 1986.
  • Infection diagnosis occurred over 2 years post-TKA on average, with arthrodesis performed a year later.
  • Compression arthrodesis using an AO plate achieved solid fusion in 80% of cases (34/44) within 6 months.
  • External fixation resulted in a lower solid fusion rate of 60% (6/10).
  • Factors contributing to delayed union or failure included poor bone stock, inadequate fixation, and persistent infection.

Impact:

  • Compression arthrodesis with an AO plate is a reliable method for achieving solid fusion in infected failed TKAs.
  • External fixation is less effective for arthrodesis in this patient population.
  • Addressing bone stock deficiencies and controlling infection are critical for successful arthrodesis outcomes.

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