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Characteristics of musculoskeletal ultrasound versus x-ray in their differential diagnosis of knee osteoarthritis

Chen S, Lin S, Li Y, Liu Y

International Journal of Clinical and Experimental Medicine 2020 Nov;13(11):8734-8739

primary study

OBJECTIVE: To explore the diagnostic value of musculoskeletal ultrasound (MSUS) versus x-ray for knee osteoarthritis (KOA). METHOD(S): Fifty patients diagnosed (57 knees) with KOA by arthroscopy were collected in our study. Additionally, fifty age-and gender-matched healthy volunteers undergoing a physical examination during the same period were recruited as controls. All the healthy volunteers had no symptoms and imaging findings of KOA. All the subjects were examined by MSUS and x-ray. The diagnostic efficacy of the two imaging meathods was analyzed separately to evaluate the diagnostic value of MSUS and x-ray in patients with KOA. RESULT(S): The detection rate of KOA by MSUS was higher than that by x-ray (p < 0.05). MSUS achieved a sensitivity of 92.98%, specificity of 78.95%, and accuracy of 89.17% in the diagnosis of KOA, while x-ray achieved a sensitivity of 73.28%, specificity of 58.94%, and accuracy of 63.69%; which indicated that the diagnostic efficacy of MSUS was higher than that of x-ray (p < 0.05). Compared with x-ray, there was a higher diagnostic accordance rate and a lower misdiagnosis rate with MSUS (p < 0.05). CONCLUSION(S): MSUS achieved a higher sensitivity, specificity, and accuracy in the diagnosis of KOA than x-ray.

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