[Ultrasonography of the hand in rheumatoid arthritis].

Authors present the ability of ultrasonography and Color and power Doppler sonography in evaluation of the hand structures in patients with rheumatoid arthritis. Imaging of bony contours allows to identify bone erosions. Thickness, oedema and presence of increased blood flow (hyperaemia) in the synovium in joints and tendon sheaths are characteristic features of an active inflammation. Changes of the tendon structure indicate its damage. US allows to image the carpal tunnel structures, to visualise changes of the median nerve in the carpal tunnel syndrome and gives possibilities to find the cause of its compression.