Fig 1.

(A) The protective cutting system is composed of a releaser and a protective cutting complex. (B) The protective cutting complex is composed of a separate cutting block and a protector. The cutting block has a slot for the saw (single-headed arrow), holes for fixing the cutting block to the anteromedial cortex (line), and a slot for connecting the cutting block to the protector (double-headed arrow). (C) The saw blade is inserted through the slot of the cutting block, and it is directed to the tip of the protector.