Index to Chiropractic Literature
Index to Chiropractic Literature
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ID 26822
  Title Sonographic evaluation of the degree of medial meniscal extrusion during Thessaly test in healthy knees
URL https://chiromt.biomedcentral.com/articles/10.1186/s12998-021-00390-5
Journal Chiropr & Manual Ther. 2021 ;29(31):1-6
Author(s)
Subject(s)
Peer Review Yes
Publication Type Article
Abstract/Notes

Objective: The Thessaly test is a commonly used orthopedic test for meniscus tear evaluation. The study’s objective is to evaluate the degree of medial meniscal extrusion during different loading phases of the Thessaly test.

Methods: A convenience sample of 60 healthy knees (35 participants) was examined and the data sets were collected from October 8, 2018 through February 8, 2019. Sonographic measurement of the degree of physiologic extrusion of the medial meniscus deep to the medial collateral ligament was taken by two examiners at six different loading phases: supine, standing, 5° knee-flexion with internal (IR)/external (ER) rotation and 20° knee-flexion with IR/ER. The difference in meniscal extrusion by knee position was compared with ANOVA. Interexaminer reproducibility assessment was analyzed using limits of agreement.

Results: The mean meniscal extrusion for each position was—supine: 2.3 ± 0.5 mm, standing: 2.8 ± 0.8 mm, 5° IR: 2.3 ± 0.9 mm, 5° ER: 2.4 ± 0.7 mm, 20° IR: 1.9 ± 0.8 mm, and 20° ER: 2.3 ± 0.7 mm. Significant increase in extrusion was observed from supine to standing (p < 0.05) and from 20° IR to 20° ER (p = 0.015). Significant decreased measurement was observed from standing to 5° IR (p < 0.05), 5° ER (p < 0.05), 20° IR (p < 0.05) and 20° ER (p < 0.05). There is no significant change between 5° IR and 5° ER (p = 1.0). Agreement parameters revealed that the differences between examiner measurements were minimal; 75% of both examiners’ meniscal extrusion measurements were within 1.0 mm with 97% of measurements falling within 2.0 mm.

Conclusion: Our study’s novel findings showed various degrees of physiological extrusion of the medial meniscus in asymptomatic knees during the loading phases involved in the Thessaly test. Physiological MME does exist and should not be defaulted to pathologic meniscus as previously described. Agreement parameters suggest that measurement of meniscal extrusion during the Thessaly test is reproducible between different examiners.

Author keywords: Medial meniscus — Ultrasonography —  Thessaly test

Author affiliations: JCC: Department of Clinical Sciences, Parker University, Dallas, Texas, United States; LT: Chiropractic Department, D'Youville College, Buffalo, New York, United States; KR: College of Chiropractic, Cleveland University, Kansas City, Kansas, United States
Corresponding author: JCC—jcho@parker.edu

This abstract is reproduced with the permission of the publisher; click on the above link for free full text.  Online access only. PubMed Record | PDF


 

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