ORIGINAL ARTICLE

Ultrasound findings in knee osteoarthritis and rheumatoid arthritis compared to MRI

Hamidreza Sadeghian , Babak Shekarchi, Mohsen Zahedi Niya, Hamed Bagheri

Hamidreza Sadeghian
Radiation and Wave Research Center, AJA University of Medical Sciences, Tehran, Iran. Email: [email protected]

Babak Shekarchi
Radiation and Wave Research Center, AJA University of Medical Sciences, Tehran, Iran

Mohsen Zahedi Niya
Radiation and Wave Research Center, AJA University of Medical Sciences, Tehran, Iran

Hamed Bagheri
Radiation and Wave Research Center, AJA University of Medical Sciences, Tehran, Iran
Online First: August 08, 2018 | Cite this Article
Sadeghian, H., Shekarchi, B., Zahedi Niya, M., Bagheri, H. 2018. Ultrasound findings in knee osteoarthritis and rheumatoid arthritis compared to MRI. Bali Medical Journal 7(2). DOI:10.15562/bmj.v7i2.1059


Background: Osteoarthritis is a common musculoskeletal degenerative disease of the cartilage of joints and rheumatoid arthritis is a destructive autoimmune joint disease. The aim of our study was comparing of ultrasound findings in knee osteoarthritis and rheumatoid arthritis with MRI as the gold standard.

Methods: One hundred subjects with chronic knee pain referred for knee MRI were evaluated by ultrasound and MRI on the same day. Two radiologists assessed knee osteoarthritis and rheumatoid arthritis parameters on ultrasound and MRI separately and independently. Agreement between the ultrasound and MRI evaluations was determined using weighted kappa statistics. Intra-class correlation coefficients were used to evaluate agreement using the absolute values of knee osteoarthritis and rheumatoid arthritis parameters.

Results: The overall agreements between the two expert’s radiologists were 85% for the knee joint. Taking an agreement in US examination of 2 expert’s radiologist the overall k for was 0.69 when comparing assessment of knee osteoarthritis and rheumatoid arthritis parameters between ultrasound and MRI. For the knee joint the overall agreement of US findings with MRI was 89%. The overall sensitivity for US of the knee joint was 95.59%, the overall specificity 81.88% in the detection of knee osteoarthritis and rheumatoid arthritis parameters.

Conclusions: Ultrasound assessment of knee osteoarthritis and rheumatoid arthritis parameters is reliable and, showing good diagnostic performance for the detection of knee osteoarthritis and rheumatoid arthritis parameters compared with MRI.

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