Ultrasound elastographic assessment of the stiffness of the anteromedial knee joint capsule at varying knee angles
| Autor: | Koichi Kobayashi, Yusuke Morise, Makoto Sakamoto, Surangika Wadugodapitiya, Masaei Tanaka, Kaito Sugita |
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| Rok vydání: | 2019 |
| Předmět: |
musculoskeletal diseases
Adult Male Correlation coefficient Knee Joint Intraclass correlation Biomedical Engineering Strain (injury) Biomaterials Young Adult medicine Ultrasound elastography Humans Sex Characteristics Articular capsule of the knee joint business.industry Ultrasound Stiffness Capsule General Medicine Equipment Design musculoskeletal system medicine.disease Elasticity Biomechanical Phenomena Elasticity Imaging Techniques Female medicine.symptom business Biomedical engineering |
| Zdroj: | Bio-medical materials and engineering. 30(2) |
| ISSN: | 1878-3619 |
| Popis: | BACKGROUND In vivo evaluation of the elastic properties of the knee joint capsule has not been adequately performed. OBJECTIVES To establish a methodology to assess the stiffness of the normal knee joint capsule over a range of knee flexion angles using ultrasound elastography. METHODS Ultrasound elastography with an acoustic coupler was used to assess the stiffness of the anteromedial capsule of the knee joints of 10 male (mean age 22.63 ± 1.02 years) and 10 female (mean age 21.6 ± 0.8 years) subjects at static knee flexion angles of 0°, 45°, 90°, and 120°. Relative stiffness of the capsule was obtained using the strain ratio (SR), defined as the ratio of the strain in the capsule to that in the acoustic coupler. RESULTS The intraclass correlation coefficient (1, 3) ranged from 0.95 to 0.96, and the correlation coefficient between examiners (2, 3) was 0.94. SR values decreased significantly as the flexion angle increased (P |
| Databáze: | OpenAIRE |
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