Khasawneh A. A.M., Karpinska O. D
FORMATION OF IMMOBILIZATION CONTRACTURE OF THE KNEE JOINT IN LABORATORY ANIMALS AND RESTORATION OF ITS FUNCTIONALITY UNDER THE INFLUENCE OF LOW-FREQUENCY VIBRATION (experimental study)
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About the author:
Khasawneh A. A.M., Karpinska O. D
Heading:
METHODS AND METHODOLOGIES
Type of article:
Scientific article
Annotation:
Joint contractures are loss of passive range of motion of the diarthrosis joint. Immobilization contractures are one of the common types of joint contractures. The study aimed to determine the effect of immobilization on the formation of knee joint contracture in laboratory animals (rats) and assess the possibility of restoring mobility using low-frequency vibration during and after immobilization. Three groups of laboratory rats, ten animals each, were studied: I – 4 weeks of immobilization, 4 weeks of observation without rehabilitation measures; II – 4 weeks of immobilization, 4 weeks of low-frequency therapy; III – 4 weeks of immobilization, and 4 weeks in a row rats received a course of vibration therapy. The knee joint range of motion was measured weekly. Vibration development was carried out in the mode of 20 Hz with an amplitude of 1.5 mm. The rapid growth of contracture occurs from the 2nd week of immobilization. In the animals of the I and II groups, the process happened in the same way. In the III group, contractures were formed by the 4th week, but significantly less than in the previous groups. After the removal of immobilization, a slow increase in movements was observed in the first group, which did not reach average values by the 4th week after the removal of immobilization. Group II rats had a rapid reduction in contracture, and recovery occurred by week 4. In the III group, recovery was complete in 2 weeks. Low-frequency vibration reduces the impact of immobilization and significantly accelerates the recovery of the joint after its completion.
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Bibliography:
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Publication of the article:
«Bulletin of problems biology and medicine», 2023 Issue 2, 169, 345-352 pages, index UDC 616.728.3-092.9
