neural arch

Full Definition

The neural arch, also called the vertebral arch, is the posterior bony structure of a vertebra that forms the roof and walls of the spinal canal. It consists of two pedicles that extend posteriorly from the vertebral body, connecting to two laminae that meet at the midline to form the spinous process. The neural arch also gives rise to the transverse processes and articular processes. Understanding neural arch anatomy is crucial for spinal surgeons as this structure houses the spinal cord and nerve roots, and surgical approaches often involve manipulation or removal of portions of the neural arch.

In Context

• "The neural arch showed evidence of stress fracturing at the pars interarticularis." — Radiology report
• "Bilateral neural arch reconstruction was performed following tumor resection." — Operative summary