Final answer:
The clinically effective technique for inserting a lag screw includes using a pilot hole, enlarging the near cortex hole, and carefully screwing in to achieve fracture site compression.
Step-by-step explanation:
The most clinically effective ordered technique for the insertion of a non-self-tapping cortex screw inserted "by lag technique" involves several steps. First, an appropriately sized drill bit is used to create a pilot hole in the near cortex. Next, a drill bit larger than the outer diameter of the screw threads is used to enlarge the hole in the near cortex only, which allows the screw threads to pass freely through the near cortex and engage only the far cortex. Finally, the screw is inserted, applying compression across the fracture site. This technique enhances the stability of the fixation by creating compression at the fracture site, which is essential for proper bone healing.