Trabecular bone (also known as spongy bone) is one of two main types of bone. Trabecular bone is spongy, and makes up the bulk of the interior of most bones, including the vertebrae, while cortical bone is dense and forms the surface of bones. Grays illustration of a human femur, a typically recognized bone. ... A diagram of a thoracic vertebra. ...

The trabecular meshwork supports the blood-forming elements in bone; when bone marrow aspirates are performed, particles of the trabecular bone, known as spicules, can be seen in the stained aspirate. Grays Anatomy illustration of cells in bone marrow. ... Spicules are skeletal structures that appear in some types of sponges. ...