Epiphysis


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epiphysis

[ə′pif·ə·səs]
(anatomy)
The end portion of a long bone in vertebrates.

Epiphysis

 

the jointed end of a tubular bone. The epiphyseal cartilage (known as growth plate) found between the epiphysis and the diaphysis plays a major role in the growth of bone lengthwise, becoming ossified between the ages of 12 and 25 years.

Injury to the epiphysis in childhood or adolescence may cause epiphysiolysis—that is, displacement of the epiphysis and rupture of the epiphyseal cartilage, which may slow down the bone’s growth and result in its shortening. A more frequent condition is osteoepiphysiolysis, in which the fracture line extends to the diaphysis as well.

References in periodicals archive ?
Stage 6 (DP3u): Visible union of epiphysis and diaphy-sis at distal phalanx of middle finger (DP3).
Ultrasonography, a readily available, noninvasive technique, can be used to evaluate the non-ossified epiphysis about the elbow of infants to demonstrate dislocations, fractures, and physical separations.
The epiphysis is completely separated from the end of the bone or the metaphysis, through the deep layer of the growth plate.
There were two cases of slipped capital femoral epiphysis out of which both show slip of epiphysis and one show oedema involving the epiphysis.
Caption: Figure 6: AP radiograph of the right knee shows significant progression of the tibial plateau osteolytic lesion in the medial tibial plateau, which now extends to the epiphysis.
This results in inaccurate visualization of the medial epiphysis and thus cannot be used for staging the extent of maturation.
This makes the cartilaginous component of their epiphysis relatively larger, and the traversing blood vessels are more vulnerable to mechanical compression.
Metaphysis of femur was the preferred site for many malignant lesions except Giant cell tumour which affected epiphysis in most cases.
If this center causes the increase in the size of bone that is a growth plate (Epiphyseal plate) and maybe it is a traction epiphysis.
This section discusses conditions such as juvenile idiopathic arthritis, congenital and idiopathic scoliosis, Scheuermann's disease, spondylolisthesis, congenital muscular torticollis, slipped capital femoral epiphysis, and sports injuries in children.
Lesions centered in the epiphysis will probably be different from radiographically similar lesions centered in the metaphysis or diaphysis.
In the present case, the angular limb deformity observed in the hind legs could be attributed to defective mineralization of osteoid and cartilaginous matrix and this is concurred with the findings of Ettinger and Feldman, 2000 who reported that the poor mineralization of bone cells and cartilaginous matrix of developing bones at the diaphyseal and epiphyseal cartilage leads to bowing of long bones, broadening of epiphysis and enlargement of long bones in rickets.