Fig. 3From: The joints in juvenile idiopathic arthritisUltrasound shows signs of tenosynovitis in the tibialis posterior and flexor digitorum longus tendons with hypertrophic synovium in the tendon sheet (a). The hypertrophic synovium can be both hypoechoic (arrow) and hyperechoic (asterisk). Hypervascularity is seen on colour Doppler examination (b)Back to article page