Superior Costal Facet Of The Thoracic Vertebrae, Anatomy

Description

Superior costal facet (fovea costalis superior) sits on the posterolateral margin of a thoracic vertebral body near its superior endplate, forming the cranial half of the articular surface for the head of a rib. Adjacent bony landmarks typically visible in the same field include the vertebral body’s superior rim, the shallow contour of the costal demifacet, and the transition to the pedicle posteriorly, with the facet positioned lateral to the midline and anterior to the vertebral foramen. Across a fixed oblique or lateral perspective, the facet reads as a smooth, slightly concave articular patch contrasted against the rougher cortical bone of the vertebral body. Small surface. Big consequences. Costovertebral joint anatomy matters whenever posterior thoracic pain must be localized, because the rib head articulates across two adjacent vertebrae (superior and inferior costal facets) and is stabilized by the radiate ligament of the head of rib and the intra-articular ligament to the intervertebral disc. Degenerative change or inflammatory arthropathy at this articulation can mimic facetogenic thoracic pain, and the narrow articular surface helps explain why subtle osteophytes or joint incongruity may be symptomatic even when plain radiographs look bland. For procedural teaching, this perspective is also useful for orienting learners to where a rib head sits relative to the vertebral body during posterior approaches, pedicle screw planning, or when reviewing CT correlation at the costovertebral level. Use this illustration in gross anatomy and osteology modules covering thoracic vertebrae, in radiology teaching files that pair bony landmarks with CT bone windows, or in orthopedics and spine surgery publications discussing costovertebral arthritis, rib head fractures, or thoracic spine trauma patterns. It also supports patient-facing education when explaining why rib motion can provoke focal paraspinal pain. Anatomical accuracy verified by SciePro's Medical Advisory Board.