Fig. 3

A 23-year-old male patient experienced trauma for 8 months with scaphoid fracture nonunion, stage II (translation/gapping of more than 2 mm), without proximal fragment avascular necrosis (A, B, C). Intraoperative arthroscopic photos from the midcarpal ulnar portal demonstrated fibrous nonunion (D), which was debrided and shaved (E, F, G). The fracture gap was filled with autogenous bone graft through the sheath of the burr (H–I), and there was the bleeder from the fracture fragment after off-pump of the water and tourniquet (J). The K-wire joystick through Micro Vector Drill Guide System could be used as joystick to help in the reduction (K). The scapholunate and radiolunate angles were corrected, and bony union was achieved after 3 months (L, M)