Drill and determine length of locking screw
For distal locking, insert the trocar with the drill sleeve through one of the distal holes in the aiming device. Drill through both humeral cortices until the bit just breaks through the medial cortex and read the depth from the drill bit. Alternatively, a depth gauge can be used.
Insert a locking screw through the trocar. A second screw is recommended, especially in osteoporotic bone.