Abstract: Objective To analyze the clinical effect of musculoskeletal ultrasound in the diagnosis of gouty arthritis of foot and ankle. Methods One hundred and twenty patients with suspected gouty arthritis of foot and ankle admitted to Mudanjiang Hospital of Traditional Chinese Medicine from June 2019 to June 2020 were selected as the research objects, and their clinical data were analyzed retrospectively. The subjects were examined by musculoskeletal ultrasonography and MRI for the first clinical diagnosis, with the final clinical diagnosis as the gold standard.The diagnosis results of the two methods was compared. Results The sensitivity and negative predictive value of musculoskeletal ultrasound in diagnosing gout of foot and ankle were significantly lower than those of MRI, the difference has statistical significant (P<0.05), but there was no statistically significant difference in specificity, diagnostic accuracy and positive predictive value between them (P>0.05); The two diagnoses were in good agreement (Kappa = 0.545). Conclusion Musculoskeletal ultrasonography has high accuracy in diagnosing gouty arthritis of foot and ankle, and has high clinical application value.

Key words: ultrasonic diagnosis of musculoskeletal, gouty arthritis of foot and ankle, magnetic resonance, accuracy, sensitivity, specificity