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Cryotherapy decreases intraarticular temperature after ACL reconstruction
Ronald Edward Glenn1, Kurt Paul Spindler, Todd Alan Warren
1Vanderbilt Sports Medicine Center, Department of Orthopaedics and Rehabilitation, Vanderbilt University Medical Center, Nashville, TN 37212, USA.
Clinical Orthopaedics and Related Research
|May 5, 2004
Summary
Cryotherapy significantly cools the suprapatellar pouch after anterior cruciate ligament reconstruction. However, cooling effects were not observed in the lateral gutter, likely due to swelling and hemarthrosis.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Biomedical Engineering
Background:
- Cryotherapy is known to reduce intraarticular knee temperature post-arthroscopy.
- Anterior cruciate ligament (ACL) reconstruction differs from simple arthroscopy due to significant postoperative hemarthrosis and swelling.
Purpose of the Study:
- To investigate the efficacy of cryotherapy in reducing intraarticular knee temperature following ACL reconstruction.
- To compare temperature changes in different knee regions (suprapatellar pouch and lateral gutter) after ACL reconstruction with cryotherapy.
Main Methods:
- Sixteen patients undergoing ACL reconstruction were studied.
- Intraarticular temperatures were measured for two hours post-surgery.
- Cryotherapy was applied for one of the two hours (eight patients in the first hour, eight in the second).
Main Results:
- Significant intraarticular temperature declines of -2.7°C were observed in the suprapatellar pouch in both cryotherapy groups.
- No significant temperature reduction was noted in the lateral gutter.
- A clinically meaningful difference of 6.0°C was found in the suprapatellar pouch between cryotherapy and no cryotherapy during the first hour.
Conclusions:
- Cryotherapy effectively reduces intraarticular temperature in the suprapatellar pouch after ACL reconstruction.
- The dependent position of the lateral gutter may lead to more pronounced swelling and hemarthrosis, blunting cryotherapy's cooling effect.
- Intraarticular temperature reduction via cryotherapy should be considered a potential clinical benefit after ACL reconstruction.