What instrument is associated with locking screw application?

The instrument associated with locking screw application is the LCP plate, which stands for Locking Compression Plate. This type of plate is specifically designed for use in orthopedic surgeries to stabilize fractures. Its unique feature is the use of locking screws that engage with the plate, providing a stronger and more stable fixation compared to traditional non-locking screws.

When a locking screw is used with the LCP plate, it threads into the plate itself, creating a fixed-angle construct that allows for more rigid stabilization of the bone fragments. This is particularly beneficial in areas where bone quality is poor or in cases involving complex fracture patterns, as it helps to prevent screw backout and provides enhanced stability during the healing process.

In contrast, the other options listed serve different purposes. Sagittal saw blades are used for cutting bone, but they do not apply locking screws. Rummel tourniquets are used to occlude blood flow during surgeries, not for fixation. Brown forceps are used for grasping and holding tissues or objects but are unrelated to the application of locking screws or plates. Thus, the association of the LCP plate with locking screw application makes it the correct answer.