Certified Instrument Specialist (CIS) Practice Exam 2025 - Free CIS Practice Questions and Study Guide

The Kerrison rongeur is specifically designed for cutting bone, making it the correct answer. This instrument features a scissor-like mechanism with a curved blade that allows surgeons to perform precise cuts in bony structures, especially in spinal and orthopedic procedures. Its design facilitates access to confined surgical sites, enabling the removal of bone spurs or decompression of the spinal canal.

Other types of instruments mentioned serve different purposes. For instance, a Cobb elevator is primarily used to elevate and retract soft tissue and is not intended for cutting bone. Adipose tissue doesn't refer to an instrument but rather to the fatty tissue found in the body, and orthopedic implants are devices used for stabilization and support of bone and joints, not for cutting. Each has its specific uses in surgical settings, but the Kerrison rongeur's unique design and function make it the ideal choice for cutting bone.