[11,12] Nowadays, it appears that the combination of den' secondary ossification center
with the odontoid base has not occurred.
(1) This fracture is more common in males, and occurs most often between the development of a secondary ossification center
and its fusion during adolescence.
The tibial tuberosity develops from a secondary ossification center
in the proximal tibia between 7 and 9 years of age [2, 6].
The "dense" area is actually a secondary ossification center
of the calcaneus, not an indication of pathology.
The vertebral ring apophysis appears as a secondary ossification center
at approximately 10 years of age.
The timing of appearance of elbow secondary ossification centers
shows considerable diversity regarding age, gender, and race.
MMP13 is the major collagenase expressed in the primary and secondary ossification centers
and drives endochondral ossification by degrading major cartilage components, such as type II collagen and aggrecan .
During the ossification of patella, secondary ossification centers
may appear around 12 years of age (Ogden, 1984).
On the appearance and evolution of secondary ossification centers
in the tibia of Gallus gallus (Linn.).
It is useful to x-ray both the injured and the unaffected elbows in skeletally immature athletes to compare secondary ossification centers
. Little League elbow demonstrates a widening of the medial epicondyle physis, for example, when the x-rays are compared.
In adolescence, secondary ossification centers
, which lie in the spinous process, transverse process, articular process, and the endplate of vertebral body, complete the growth of the vertebral column.
Secondary ossification centers
located on the ends of the long bones are named epiphyses and those at the insertion site of a muscle are named apophyses.