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The advantage and disadvantage of routine x-ray examination and musculoskeletal ultrasound in the diagnosis of the patients with knee osteoarthritis

Wang Z, Zuo B

International Journal of Clinical and Experimental Medicine 2020 Dec;13(12):9742-9750

primary study

OBJECTIVE: This study aimed to compare the advantages and disadvantages of x-ray and musculoskeletal ultrasound in the diagnosis of patients with knee osteoarthritis (KOA). METHOD(S): A total of 60 patients with KOA (120 cases of knees) treated in our hospital were selected as the experimental group. Another 60 healthy individuals (120 cases of knees) with physical examination in our hospital were selected as the control group. X-ray and musculoskeletal ultrasound were performed. The Kazam sonographic evaluation method and the Kellgren-Lawrence radiographic classification system were adopted to grade the level of osteoarthritis in patients from the experimental group. Visual analogue scale (VAS) and Western Ontario and McMaster universities (WOMAC) osteoarthritis index were used to assess the clinical manifestation of patients in the experimental group. The correlation between the grading outcomes and the clinical symptoms of patients as well as the diagnostic results from both methods were compared. RESULT(S): Knee joints in the control group had none or little effusion in suprapatellar bursa with the smaller anteroposterior diameter of the sonolucent area. The articular cartilage had smooth edges and bilateral symmetry. Knee lesions were observed in the experimental group. The detection rates of musculoskeletal ultrasound were higher than those of x-ray examination (p < 0.05). There was a positive correlation between the grading outcomes of musculoskeletal ultrasound images and VAS and WOMAC index (p < 0.05). There was a positive correlation between the grading outcomes of x-ray results and VAS and WOMAC index (p < 0.05). The correlation coefficient between the outcomes of musculoskeletal ultrasound and x-ray examination was 0.551 (p < 0.05). CONCLUSION(S): The musculoskeletal ultrasound was more sensitive in assessing KOA manifestations and could better reflect the pathological changes of soft tissue surrounding the knee joint of KOA patients, which could be used as a KOA diagnostic method.

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