Table 1

Prevalence of ultrasonographic signs of gout

Sonographic signsAll jointsKnees1st MTJ
Joint effusionN=3 n=115 J=1518
0.33 (0.06 to 0.80)
N=3 n=70 J=100
0.53 (0.21 to 0.82)
N=4 n=167 J=272
0.57 (0.37 to 0.75)
SynovitisN=4 n=142 J=1544
0.22 (0.03 to 0.72)
N=3 n=125 J=210
0.48 (0.13 to 0.45)
Bone erosionN=5 n=223 J=399
0.38 (0.19 to 0.61)
N=4 n=150 J=255
0.57 (0.37 to 0.75)
TophusN=5 n=221 J=827
0.44 (0.20 to 0.72)
N=3 n=91 J=142
0.33 (0.18 to 0.51)
N=7 n=232 J=555
0.60 (0.38 to 0.78)
DC signN=7 n=236 J=922
0.50 (0.29 to 0.71)
N=5 n=129 J=224
0.43 (0.31 to 0.56)
N=7 n=222 J=540
0.48 (0.30 to 0.66)
  • Values are prevalence (95% CI) with the DerSimonian–Laird random effects pooling method.

  • DC, double contour; J, number of joints; N, number of included studies; n, number of patients; 1st MTJ, first metatarsal joint.