Complete Skeletal System

Description

Posterior trunk anatomy centers on the thoracolumbar spine, with the lower thoracic and lumbar vertebrae aligned in the midline and the spinous processes forming a clear posterior ridge. Laterally, paired ribs sweep anterolaterally from the costovertebral joints, their heads and tubercles articulating with thoracic vertebral bodies and transverse processes. Inferiorly, the illustration includes the superior pelvis, where the sacrum meets the iliac bones at the sacroiliac joints and continues cranially as the lumbar spine. A posterior thoracolumbar view like this is the one you want when teaching how ribs truly anchor to the spine, because it makes the costotransverse and costovertebral articulations, and the segmental organization of the thoracic cage, easy to correlate with clinical pain patterns. It also maps directly to common procedures and pathology: vertebral compression fractures at the thoracolumbar junction, posterior instrumentation with pedicle screws in the lumbar spine, and posterior approaches that demand reliable bony landmarks when surface anatomy is obscured. Clear midline alignment matters. Subtle scoliosis, rotation, or loss of lordosis changes both biomechanics and radiographic interpretation. Use this artwork for gross anatomy and osteology modules covering the axial skeleton, or for lecture slides on thoracic cage mechanics, spinal curvature, and joint classification (intervertebral symphyses, zygapophysial synovial joints, and sacroiliac joints). It also fits spine surgery and pain medicine materials that need quick orientation to ribs versus transverse processes, or patient education illustrating where thoracolumbar back pain often localizes relative to vertebral level and pelvis. Anatomical accuracy verified by SciePro's Medical Advisory Board.