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KMID : 0608320190260010060
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Physical Therapy Korea
2019 Volume.26 No. 1 p.60 ~ p.66
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Validity and Reliability of Ultrasound Measurement of Knee Joint Space Width in Individuals With Knee Osteoarthritis
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Kim Geon
Cha Young-Joo
Shin Ji-Won
You Sung-Hyun
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Abstract
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Background: Knee osteoarthritis (OA) is a single most arthritic disease. Knee joint space width (JSW) is commonly used for grading severity of knee OA. However, previous studies did not established criterion validity and test-retest reliability of ultrasound (US) image for measuring JSW.
Objects: The aim of this study was to establish criterion validity and test-retest reliability of US measurement of medial and lateral knee JSW.
Methods: Twenty-nine subjects with knee OA were participated. The US and X-ray were used to measure knee JSW. One sample Kolmogorov-Smirnov test was used to confirm the data normal distribution. Pearson correlation coefficient and ICC were used to calculated and establish criterion validity and test-retest reliability, respectively.
Results: US measurement of medial and lateral knee JSW was highly correlated with radiographic imaging measure (r=.714 and .704, respectively). Test-retest reliabilities of medial and lateral knee JSW were excellent correlated (ICC=.959 for medial side and .988 for lateral side, respectively).
Conclusion: US may be valid tool to measure knee JSW.
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KEYWORD
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Knee joint space width , Knee osteoarthritis , Reliability , Ultrasound , Validity
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