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Related Experiment Videos

Pin tract infections: a canine model.

P J Respet1, P G Kleinman, B P Meinhard

  • 1Department of Orthopaedic Surgery, Nassau County Medical Center, East Meadow, New York, NY 11554.

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
|January 1, 1987
PubMed
Summary

Prolonged skeletal pin use increases infection risk. Allowing pin tracts to heal for at least three weeks before osteosynthesis likely reduces deep infection chances.

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Area of Science:

  • Veterinary Orthopedics
  • Infectious Disease Research

Background:

  • Skeletal pin insertion is common in orthopedic procedures.
  • Understanding infection risks associated with skeletal pins is crucial for patient outcomes.

Purpose of the Study:

  • To investigate the correlation between skeletal pin dwell time and bacterial infection.
  • To determine the relationship between skin flora and intramedullary infections.
  • To establish the necessary healing period for medullary canals post-pin removal to prevent infection.

Main Methods:

  • Skeletal pins were inserted into dogs.
  • Intramedullary and skin cultures were performed.
  • Dogs were divided into groups based on pin dwell time (1-4 weeks) and pin tract healing duration.

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Main Results:

  • A direct correlation exists between skeletal pin duration and positive intramedullary cultures.
  • Skin organisms were the source of infection in 88% of intramedullary cultures.
  • No infections occurred when pin tracts healed for ≥3 weeks before medullary canal culture.

Conclusions:

  • Extended skeletal pin usage elevates the risk of intramedullary bacterial infection.
  • Skin flora frequently contaminates the medullary canal.
  • A minimum of 3 weeks of pin tract healing is likely sufficient to prevent deep infection during subsequent osteosynthesis.