What is the metaphyseal region?

The metaphysis is the region where the epiphysis joins the diaphysis; in a growing bone this corresponds to the calcified layer of the epiphyseal plate together with the interdigitating bone (see Figure 4.19).

Where is metaphysis located in the bone?

The metaphyses (singular: metaphysis) are the wide portions of long bones and the regions of the bone where growth occurs. Growth occurs at the section of the metaphysis that is adjacent to the growth plate (physis). The metaphysis is located between the diaphysis and epiphysis.

What type of bone is found in the metaphysis?

The metaphysis is the trumpet-shaped end of long bones. It has a thinner cortical area and increased trabecular bone and is wider than the corresponding diaphyseal part of the bone.

What are the anatomical regions of a long bone?

A long bone has two main regions: the diaphysis and the epiphysis (Figure 6.3. 1). The diaphysis is the hollow, tubular shaft that runs between the proximal and distal ends of the bone. Inside the diaphysis is the medullary cavity, which is filled with yellow bone marrow in an adult.

What is a metaphyseal fracture definition?

Metaphyseal fractures are also known as corner fractures, bucket handle fractures or metaphyseal lesions. It refers to an injury to the metaphysis which is the growing plate at each end of a long bone (such as tibia, femur, etc).

What is metaphysis and epiphysis?

The central tubular region of the bone, called the diaphysis, flares outward near the end to form the metaphysis, which contains a largely cancellous, or spongy, interior. At the end of the bone is the epiphysis, which in young people is separated from the metaphysis by the physis, or growth plate.

Where does long bone growth occur?

Bone Growth Bones grow in length at the epiphyseal plate by a process that is similar to endochondral ossification. The cartilage in the region of the epiphyseal plate next to the epiphysis continues to grow by mitosis. The chondrocytes, in the region next to the diaphysis, age and degenerate.

What causes metaphyseal fractures?

The amount of force needed is not known but it is thought to be outside of normal or rough handling. Speculation is often offered that these fractures are caused during shaking by the child’s limbs flailing about or by an adult yanking/twisting on a limb during frustration.

What is the metaphysis of a long bone?

Structure of a long bone, showing the metaphysis. [edit on Wikidata] The metaphysis is the narrow 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 epiphyses.

What is the metaphysis of the neck?

Not to be confused with metaphysics. The metaphysis is the neck 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 epiphyses.

What is a metaphyseal lesion?

Metaphyseal tumors or lesions include osteosarcoma, chondrosarcoma, fibrosarcoma, osteoblastoma, enchondroma, fibrous dysplasia, simple bone cyst, aneurysmal bone cyst, non-ossifying fibroma, and osteoid osteoma.

What are the signs and symptoms of metaphyseal bands?

Metaphyseal bands may be solitary or multiple. MRI will show marrow replacement. Decreased endochondral bone formation is most visible in the most rapidly growing bones. Bone pain. Irregular bands.