What is the correct sequence for screw placement in surgical procedures?

The correct sequence for screw placement in surgical procedures is to drill, measure, tap, and then insert the screw. This process is critical for ensuring that the screw fits properly and secures the intended structures effectively.

Initially, drilling is essential as it creates the pilot hole in the bone or tissue, allowing for the screw to be inserted without causing damage. Following this, measuring is important to confirm the depth of the hole and to ensure that the screw being used is of appropriate length for optimal fixation. It helps prevent over-screwing or under-screwing, which can lead to complications.

After measuring, tapping the hole creates a thread that matches the screw's design, facilitating an easier and more secure insertion. This step is particularly crucial in dense bone, where without the tap, inserting the screw can be difficult and can fracture the surrounding tissue.

Finally, inserting the screw completes the process, providing stable fixation as intended in the surgical procedure. This methodical approach enhances the accuracy and reliability of the fixation technique, leading to better surgical outcomes.