Fig. 4

Correct placement of the two 2.0 mm K-wires that prepare the correct placement for the definite guide-wires: a Note the prominent subcutaneous veins that are marked with a steriel pen to avoid accidental damage. Intraoperatively, a true d.p. and lateral view can easily be obtained without changing the position of the fluroscope. b Fluoroscopic control of the correct K-wire placement. The first/proximal K-wire exits the lateral cortex of MT1 proximal to the osteotomy site. Both K-wires run parallel along the shaft axis of MT1. c Sawbone model demonstrating the exit point of the first/proximal 2.0 mm K-wire proximal to the planned osteotomy site (black line)