Ninth Thoracic Vertebra T9, Lateral View

Description

Prominent in lateral profile, the ninth thoracic vertebra (T9) is rendered with its vertebral body anteriorly and the vertebral arch posteriorly, framing the vertebral foramen between them. The pedicle projects posteriorly from the body, and the inferior vertebral notch undercuts its caudal border, deeper than the superior notch and contributing to the intervertebral foramen with T10. Posterior elements include the laminae converging toward the spinous process, with the transverse process extending laterally for articulation with the tubercle of rib 9 via the transverse costal facet. Facet orientation follows thoracic pattern, with the superior articular process facing posteriorly and the inferior articular process facing anteriorly. This lateral view emphasizes the bony margins that define the thoracic intervertebral foramen, a practical landmark when correlating foraminal stenosis with a T9 radiculopathy pattern that can present as a band-like pain around the trunk. The inferior vertebral notch and pedicle are also the key corridor for transpedicular instrumentation, and the relationship of the transverse process to the rib articulation matters when planning thoracic approaches or interpreting CT in trauma where costotransverse injuries can accompany vertebral fractures. Small structures drive big decisions. Common use cases include musculoskeletal and neuroanatomy teaching in gross anatomy or radiologic anatomy courses, figure plates for spine chapters discussing thoracic vertebrae and rib articulations, and surgical education materials on thoracic pedicle screw trajectory and foraminal decompression. Anatomical accuracy verified by SciePro's Medical Advisory Board.