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Related Experiment Videos

Temperature changes in the knee joint during arthroscopic surgery

S Zaffagnini1, A A Allen, J K Suh

  • 1Istituto Ortopedico Rizzoli, Università di Bologna, Italy.

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
|January 1, 1996
PubMed
Summary
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Arthroscopic surgery significantly lowers knee joint temperature, impacting articular cartilage. Saline irrigant temperature and procedure length are key factors affecting this drop.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Cartilage Biology

Background:

  • Arthroscopic surgery alters normal joint conditions, with unknown effects on articular cartilage ultrastructure and biomechanics.
  • Previous research indicates temperature variations significantly impact articular cartilage biomechanical properties.

Purpose of the Study:

  • To document knee joint temperature changes during arthroscopic procedures.
  • To identify predictors of intra-articular temperature at the end of surgery.

Main Methods:

  • Intra-articular knee joint temperature was measured in 40 patients before and after arthroscopic surgery (ACL reconstruction or meniscectomy).
  • Measurements utilized a digital thermometer with a sterile stainless steel probe.
  • Correlation coefficients and linear regression analyses were employed to identify independent predictors of final joint temperature.

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Main Results:

  • Mean knee joint temperature decreased from 35.1°C (pre-surgery) to 24.6°C (post-surgery).
  • Joint temperature at the end of surgery was significantly influenced by the temperature of the saline irrigant and the duration of the arthroscopic procedure.

Conclusions:

  • Arthroscopic surgery leads to a substantial drop in knee joint temperature.
  • Saline irrigant temperature and procedure length are critical determinants of intra-articular temperature.
  • Further investigation in animal models is necessary to elucidate the clinical implications of these temperature changes on articular cartilage.