What type of instrument is a Kerrison rongeur?

The Kerrison rongeur is a specialized surgical instrument designed primarily for cutting and removing bone tissue, particularly in delicate surgical procedures. Its unique design features cupped jaws and a lever mechanism, allowing for precise control during the removal of bone. This makes it particularly useful in neurosurgery and orthopedic surgery, where careful shaving or excision of bone is often necessary to access underlying structures or to relieve pressure on nerves.

The capability of the Kerrison rongeur to cut bone effectively distinguishes it from other types of instruments such as measuring tools, retractors, and probes, which serve different functions in surgical scenarios. Therefore, its classification as a cutting tool specifically for bony structures is accurate and highlights its utility in the operating room.