In lag screw technique, what is the function of counter-sink?
To flush the obliquely place screw head with the rest of the proximal cortex, countersink is made that acts as a receptacle for engaging the end of screw head.
Assures appropriate receptacle for screw head
It is the hole made in the distal fragment that engages the screw threads
It is the hole made in the proximal segment that does not engage the screw threads
It is non functional