Fig. 1
From: Intra-substance steroid injection for full-thickness supraspinatus tendon rupture
a Rupture size in longitudinal axis of supraspinatus tendon was measured by sonography. Hypoechoic area (solid arrow) indicates the rupture area of tendon. 1b Intra-substance injection was done by echo-guided injection directly into the rupture area (solid arrow) of supraspinatus tendon. Injection needle (hollow arrow) can be clearly seen on sonography in longitudinal view. 1c Injection needle tip (hollow arrow) can be seen in rupture area (solid arrow) of supraspinatus tendon in transverse view
SS = supraspinatus tendon, GT = greater tuberosity of humerus.