Bones show its importance to human body, as it is required for motion and is also provider of support to the body.

It is necessary to know more about the structure of the bone, to have an improved understanding of bone cancer.

Bone consists of a fibrous tissue called matrix on which calcium salts are laid down, as its outer part. This fibrous tissue is part of the outer membrane of the bone- the Periosteum.

Inside hollow bones, there is a soft tissue known as bone marrow, found in a space called the Medullary cavity. The bone marrow can be either a fatty tissue only or a mixture of fat cells as well as blood generating cells. These blood generating cells in the bone marrow are responsible for the production of Erythrocytes, Leukocytes and Platelets, which are important components of blood.

The tissue known as cartilage, found at the two ends of a bone acts as a cushion between the bones.
The bone tissue or the osseous tissue contains two different kinds of cells. They are, Osteoblast and Osteoclast which are functionally known as the â??bone forming cellsâ?? and cells that dissolve or breakdown bone tissues, respectively.

The term tissue was commonly mentioned in the description of the structure of the bone. It can be defined simply, as a group of cells who have a common function. Therefore, it is obvious out of the many cells that form a bone, any can develop to a cancer.

These are several types of bone cancers- â??metastatic cancerâ?? a cancer that spreads elsewhere from its origin), cancers formed in the bone marrow that generates blood cells such as â??multiple myelomaâ??, leukemia also commonly known as blood cancer) and lymphomas {(though it is often found in lymph nodes, there are occasions when it starts in the bone marrow|which commonly originates in the lymph nodes but occasionally origins from the bone marrow).

A bone tumor that starts in the bone is known as primary bone tumors and they are usually the main type of bone cancers. Some of the bone tumors do lead to bone cancers; however, not all bone tumors are cancerous.

The following are the names of some cancerous primary bone tumors:
Osteosarcoma – (also known as Osteogenic sarcoma) one of the most common primary bone cancers that start in the bone cells.
Chondrosarcoma a bone cancer that starts in the cartilage cells (known as the second most common primary bone cancer).
Ewing tumor (which is a bone cancer starting off either in bones or in other tissues)
Malignant fibrous histiocytoma (MFH) mostly starting off in soft tissues than in bones
Fibrosarcoma (which is also similar to MFH)
Giant cell tumor of bone (which is less often found as a bone cancer- as it takes the non cancerous form)
Chordoma (a bone cancer that develops in the skull and bones of the spine).

All different types of bone cancers can be treated using, radiotherapy, chemotherapy and surgery.