Difference Between Compact And Spongy Bones

the bones of animals can be spongy or compact osseous tissue. their concentration and distribution can also be varied depending on the overall structure of bones. the basic difference between Compact And Spongy Bones is that compact bones are those that are dense and can withstand compressive force while spongy are those bones that have open spaces and supports shifts in weight distribution.

Difference Between Compact And Spongy Bones in Tabular Form

Compact Bones Spongy Bones
Compact bones are also called cortical bones Spongy Bones are also called cancellous bones
They are heavy, tough, and compact in nature They are light, spongy and soft in nature
They are made up of osteons They are made up of trabeculae
They fill the outer layer of most bones They fill the inner layer of most bones
Bone-marrow cavity present in the center Bone-marrow cavity absent
Bone marrow stores fat Bone marrow produces red corpuscles and white granular corpuscles
It forms the shaft or diaphysis of long bones It forms the ends or epiphyses of long bones
They are designed to withstand heavy weight. They are not designed to buffer the shock produced from any movement.
They constitute 80% of the skeletal systems’ total weight. They account for 20% of the total skeletal system’s weight.
They are found in long bone tissues such as in the arms and legs. They are found mostly in short bones such as those in the wrist and ankles.
They do not transform into spongy bones. The action of osteoblasts deposits a new bone matrix between trabeculae and eventually transforms spongy bones to compact bones.


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