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Table 2 Pathological ultrasonographic findings in jointsa

From: Joint and tendon subclinical involvement suggestive of gouty arthritis in asymptomatic hyperuricemia: an ultrasound controlled study

Anatomical site and US findings Hyperuricemic (n= 100 joints) Normouricemic (n= 104 joints) Pvalue
First MTP joint, n (%)
   Double contour sign 25 (25%) 0 <0.0001
Joint cavity widening (synovial fluid/hypertrophy) 52 (52%) 25 (24%) <0.0001
   Power Doppler signal 0 0 NS
   Bone erosion 12 (12%) 6 (5.7%) NS
Knee, n (%)    
Double contour sign (femoral hyaline cartilage) 17 (17%) 0 <0.0001
Joint cavity widening (synovial fluid/hypertrophy) 7 (7%) 2 (1.9%) NS
  1. aUS, ultrasonographic; MTP, metatarsal-phalangeal joint; NS, not significant.