Applications value of knee joints in rheumatoid arthritis by high-frequency color doppler ultrasonography

Objective: To investigate the applications value of high-frequency color doppler ultrasonography on knee joint in rheumatoid arthritis (RA). Methods: 168 knee joints of 84 RA patients were examined with high-frequency color doppler ultrasonography to observe joint capsule effusion, the synovium, cartilage, and color flow in synovium. Result: Capsula effusion were detected in 136 knee joints in 84 RA patients (81% ), synovitis were detected in 152 knee joints in 84 RA patients(90.5%), cartilage were thinner in 20 knee joints in 84 RA patients(11.9%), and cartilage were disappeared in 2 knee joints in 84 RA patients(1.2%), and blood flow signal were found in 109 knee joints in RA patients. Conclusion: High-frequency color doppler ultrasonography could be applied in the diagnosis of knee joints in rheumatoid arthritis.