Metaphysis

Metaphysis is the wide portion of a long bone between the epiphysis and the diaphysis. It contains the growth plate, the part of the bone that grows during childhood, and as it grows it ossifies near the diaphysis and the epiphysis.

Anatomy

The metaphysis is the part of the bone that contains the epiphyseal plate (growth plate), a layer of hyaline (transparent) cartilage in a growing bone. Once the bone has reached its full growth, the epiphyseal plate ossifies and forms the epiphyseal line. This line is visible in adults, and is the remnant of the epiphyseal plate.

Function

The primary function of the metaphysis is bone growth. It is where new bone cells are produced and where ossification takes place. The metaphysis also serves as a support structure for the bone, providing a connection between the diaphysis and the epiphysis.

Clinical significance

Conditions that affect the metaphysis can have serious implications for growth and development. These conditions include rickets, osteomalacia, and certain types of bone cancer. In rickets and osteomalacia, the metaphysis becomes wider, while in bone cancer, the metaphysis may be the site of a tumor.

See also

• Epiphysis
• Diaphysis
• Bone growth
• Ossification

Metaphysis Resources
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