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Knee Surgery, Sports Traumatology, Arthroscopy

, Volume 22, Issue 9, pp 2048–2056 | Cite as

Knee temperatures measured in vivo after arthroscopic ACL reconstruction followed by cryotherapy with gel-packs or computer controlled heat extraction

  • Aleksandra Rashkovska
  • Roman Trobec
  • Viktor Avbelj
  • Matjaž Veselko
Knee

Abstract

Purpose

To obtain in vivo data about intra- and extra-articular knee temperatures to assess the effectiveness of two cryotherapeutic methods—conventional cooling with gel-packs and computer controlled cryotherapy following anterior cruciate ligament (ACL) reconstructive surgery.

Methods

Twenty patients were arbitrarily assigned for cryotherapy after ACL reconstruction: 8 patients with frozen gel-packs and 12 patients with computer controlled cryotherapy with constant temperatures of the cooling liquid in the knee pads. The treatment was performed for 12 h. Temperatures were measured with two thermo sensors in catheters placed intraarticularly and subcutaneously, four sensors on the skin and one sensor under protective bandage, every second for 16 h after surgery.

Results

In the first 2 h of treatment, there were no significant differences (n.s.) between the groups in temperatures in the intracondylar notch. After 4 h of cryotherapy, the temperatures were significantly lower on the skin (24.6 ± 2.8 and 31.4 ± 1.3 °C, p < 0.01) and in the subcutaneous tissue (28.6 ± 5.7 and 34.6 ± 1.4 °C, p = 0.01), and the difference between the temperature in the intracondylar notch and the subcutaneous tissue was significantly greater (4.0 ± 3.0 and 0.8 ± 0.6 °C, p = 0.01) in the computer controlled cryotherapy group compared to the gel-pack group.

Conclusions

The cooling effect of the arthroscopy irrigation fluid on the knee temperature is evident in the first 2 h of treatment. The energy extraction is significantly more effective and controllable by computer controlled cryotherapy than with frozen gel-packs.

Level of evidence

Prospective comparative study, Level II.

Keywords

Arthroscopy Anterior cruciate ligament Cryotherapy Temperature 

Notes

Acknowledgments

We thank the staff of the University Medical Centre Ljubljana, Department of Traumatology, Slovenia, for their generous support, and WAEGENER R&D NV, Belgium, for the cTreatment® device and partial funding. We also thank MSc Ivan Tomasić for his assistance in the statistical analysis. We acknowledge the remaining financial support from the state budget by the Slovenian Research Agency under the Grant P2-0095.

Supplementary material

167_2013_2605_MOESM1_ESM.pdf (2.7 mb)
Supplementary material 1 (PDF 2745 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Aleksandra Rashkovska
    • 1
  • Roman Trobec
    • 1
  • Viktor Avbelj
    • 1
  • Matjaž Veselko
    • 2
  1. 1.Department of Communication SystemsJožef Stefan InstituteLjubljanaSlovenia
  2. 2.Department of TraumatologyUniversity Medical Centre LjubljanaLjubljanaSlovenia

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