T3 Vertebra

Description

Seen in lateral profile, the upper thoracic spine is rendered with vertebral bodies stacked anteriorly and overlapping spinous processes projecting posteriorly along the normal thoracic kyphosis. The T3 vertebra sits inferior to T2 and superior to T4, with its intervertebral discs forming clear cartilaginous intervals at the endplates. Thoracic-specific morphology is evident, including the posteriorly directed spinous process and the costal facets on the vertebral body and transverse process for rib articulation, while the vertebral canal appears relatively circular at this level and the superior articular facets orient to guide motion. T3 matters because it sits near the transition between the cervicothoracic junction and the mid-thoracic segment, where rib attachments and facet orientation limit flexion and extension but permit coupled rotation. In trauma, a burst fracture at this level threatens the spinal canal, and in degenerative disease the zygapophysial joints can drive focal pain with rotation, patterns clinicians often correlate with facet-mediated thoracic pain. For procedural planning, the lateral relationship between vertebral body, pedicle, and posterior elements helps orient pedicle screw trajectory and rib head proximity in upper thoracic instrumentation. Course directors can drop this plate directly into thoracic osteology teaching, radiology correlation sessions for lateral spine imaging, or surgical anatomy figures discussing upper thoracic fixation and rib articulation landmarks. It also suits textbook spreads contrasting cervical, thoracic, and lumbar vertebral morphology using a single, consistent perspective. Anatomical accuracy verified by SciePro's Medical Advisory Board.