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Diagnostic protocol in prosthetic loosening

A Sudanese1, A Toni, L Busanelli

  • 1Clinica Ortopedica dell'Università, Istituto Ortopedico Rizzoli, Bologna.

La Chirurgia Degli Organi Di Movimento
|October 1, 1994
PubMed
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This study presents a protocol for identifying prosthetic loosening and septic causes. Bone scans with labeled granulocytes achieved 91.4% accuracy in preoperative infection detection.

Area of Science:

  • Orthopedics
  • Nuclear Medicine
  • Infectious Diseases

Background:

  • Prosthetic joint infections and loosening are significant complications.
  • Accurate preoperative diagnosis is crucial for effective treatment planning.

Purpose of the Study:

  • To evaluate a protocol for diagnosing prosthetic loosening and septic etiology.
  • To assess the accuracy of diagnostic methods, particularly bone scintigraphy.

Main Methods:

  • A protocol involving clinical and radiographic assessment was applied to 35 cases.
  • Bone scintigraphy using Technetium-99m (Tc 99 m) was a key component.
  • Positive scans were followed by laboratory tests, CT, and needle aspiration; bone scans with labeled granulocytes were emphasized.

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Main Results:

  • The protocol demonstrated high accuracy in identifying infection causes.
  • Bone scintigraphy with labeled granulocytes was particularly effective.
  • The overall accuracy of the protocol reached 91.4% for preoperative infection identification.

Conclusions:

  • The developed protocol is highly accurate for preoperative diagnosis of prosthetic joint infection.
  • Bone scintigraphy with labeled granulocytes is a valuable tool in this diagnostic pathway.
  • This approach aids in distinguishing septic from aseptic prosthetic loosening.