Sonogram of the long head of the biceps tendon in rheumatoid arthritis

The left panel shows an anterior transverse sonogram of the long head of the biceps tendon in a patient with rheumatoid arthritis. Fluid (arrowheads) is present inside the distended biceps tendon sheath. The biceps tendon itself shows signs of partial tear (curved arrow). The right panel shows power Doppler signals of the biceps tendon sheath.