Figure 1: Antegrade suture passers used in this study: (a) ExpresSew II, (b) Arthrex Scorpion, (c) Concept, and (d) ElitePass. Each small box shows an enlarged image of the flexible needle used in each device. All needles had a side opening that captured and delivered the suture through the tendon. Note that the superior grasping arm of device C did not have a locking mechanism and is therefore shown open in this image