Certified Instrument Specialist (CIS) Practice Exam 2026 - Free CIS Practice Questions and Study Guide

The Cloward lamina retractor is classified as a self-retaining retractor. This type of retractor is designed to hold itself in position during surgical procedures, allowing for stable exposure of the surgical site without the need for constant manual support from the surgical staff. The self-retaining mechanism employs various designs to maintain tension and keep incisions open, which is crucial for ensuring that the surgeon has clear access and visibility to the area being operated on.

In the case of the Cloward lamina retractor, its design specifically accommodates the retention of the lamina during spinal surgery, providing optimal access to the spinal canal. This characteristic is particularly beneficial in neurosurgical and orthopedic procedures where maintaining a clear field is essential for safety and efficacy.

The other types of retractors mentioned do not possess the self-retaining feature that distinguishes this device. Spring-loaded retractors require manual adjustment and do not hold positions independently, while hand-held retractors need an assistant to maintain their placement. Electrically operated retractors, while mechanized, are not part of the design or functionality of the Cloward lamina retractor. Thus, the classification of the Cloward lamina retractor as a self-retaining tool captures its intended use and functional