Vertebra L2

The lumbar vertebra L2 (2nd lumbar vertebra), like other lumbar vertebrae, has several distinct anatomical features. The vertebral body of L2 is larger and more robust compared to the thoracic vertebrae, reflecting its role in bearing more weight. The vertebral body is roughly cylindrical, with a slightly concave superior and inferior surface. The transverse processes of L2 are long and slender, projecting laterally and slightly posteriorly. The spinous process is short, thick, and broad, projecting posteriorly.

The pedicles of L2 are strong and project posteriorly from the upper part of the vertebral body. The laminae are broad and thick, forming the posterior part of the vertebral arch. The superior and inferior articular processes are well-developed, with the superior articular facets facing medially and slightly posteriorly, and the inferior articular facets facing laterally and slightly anteriorly. This orientation allows for flexion and extension movements while limiting rotation.

The vertebral foramen of L2 is triangular and larger than that of the thoracic vertebrae, providing space for the cauda equina.