Ultrasonic features

Prevalence

Missing values (n)


Detection of at least one US tophus

34 (53.1%)
 
Localisation of the largest US tophus

Right MTP

17 (50%)
 
Left MTP

9 (26.5%)
 
Right ankle

0 (0%)
 
Left ankle

1 (2.9%)
 
Right knee

1 (2.9%)
 
Left knee

6 (17.6%)
 
US tophus volume (cm^{3})

2.5 ± 6.5
 
At least one joint with positive DC sign

61 (95.3%)
 
Localisation of DC signs

Right MTP

48 (81.3%)

2

Left MTP

51 (86.4%)

2

Right TC

16 (26.7%)

1

Left TC

18 (30%)

1

Right FP

16 (25%)
 
Left FP

14 (21.9%)
 
 Quantitative variables are expressed as mean ± standard deviation, and qualitative variables as number (percentage). MTP metatarsophalangeal joint, TC talocrural joint, FP femoropatellar joint