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Journal of the Korean Academy of Rehabilitation Medicine 1998;22(2):299-304.
The Effect of Cold Air Application for the Intraarticular and Skin Temperature Changes of Knees.
Baek, Seung Sug , Choi, Ki Sub , Park, Si Bog , Lee, Sang Gun , Kim, Young Ho , Yang, Gil Tae , Chang, Yun Hee
1Department of Rehabilitation Medicine, College of Medicine, Hanyang University.
2Korea Orthopedics and Rehabilitation Engineering Center.
3Department of Medical Engineering, College of Health Science, Yonsei University.
냉기치료후 슬관절강내의 온도변화
백승석, 최기섭, 박시복, 이상건, 김영호2, 양길태1, 장윤희1
한양대학교 의과대학 재활의학교실 및 1근로복지공단 재활공학연구센타, 2연세대학교 보건과학대학 의용전자공학과

The purposes of this study are to investigate the effect of the cold air application in the skin and intraarticular temperature changes and to observe the rebound temperature changes after cooling.

We recorded the changes of the skin surface and intraarticular temperatures of knees during and after the cold air application. The intraarticular temperature was measured by a temperature probe inserted into the knee joint cavity and the skin temperature by the infrared system. Eighteen healthy subjects were examined. The knee was cooled by a 5-minutes application of CRAis (Kyung-won Century, Korea) machine and the intraarticular and skin temperatures of knees were measured at every 0.5-minute during and after the cold therpy, then at every minute for 5 minutes, and every 5-minute for the next 110 minutes. We also evaluated the variables that might affect the skin and intraarticular temperature changes.

showed that the mean skin temperature dropped from 31.8℃ to 10.5℃ immediately after the cold air application for 5-minutes. The mean intraarticular temperature dropped from 33.9℃ to 30.0℃ after the cold air application for 5-minutes. Two hours after the initiation of treatment with cold air, the mean intraarticular temperatures did not recover to the baseline values(p<0.01). No significant correlations were found between the body mass index with the intraarticular and surface temperatures of knees. A highly significant correlation was noted between the baseline skin surface and intraarticular temperatures(p<0.01).

In conclusion, the reduction of the joint temperature by the cold air application using CRAis machine can be a useful treatment method for the synovitis of knees.

Key Words: Cold therapy, Skin temperature, Intraarticular temperature, Synovitis


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