Wirbelkörper

A Wirbelkörper, often translated as vertebral body, refers to the main structural component of a vertebra in the spine. It is the anterior, weight-bearing part of the vertebra, situated ventral to the vertebral arch. The Wirbelkörper is typically cylindrical in shape and is composed of spongy bone, also known as trabecular bone, which is enclosed by a thin layer of compact bone. The superior and inferior surfaces of the Wirbelkörper are covered by articular cartilage, forming the intervertebral discs with the adjacent vertebrae. This arrangement allows for the transmission of body weight and shock absorption.

The size and shape of the Wirbelkörper vary depending on its location in the vertebral column. For instance, the Wirbelkörper of the lumbar vertebrae are significantly larger and more robust than those of the cervical or thoracic vertebrae, reflecting the greater load they bear. The anterior surface of the Wirbelkörper is generally convex, while the posterior surface is relatively flat or concave. The inferior surface is usually flat. The Wirbelkörper plays a crucial role in maintaining spinal stability and facilitating movement. Diseases or injuries affecting the Wirbelkörper can lead to pain, instability, and neurological deficits.