primary ossification center

primary ossification center

[TA]
the first site where bone begins to form in the shaft of a long bone or in the body of an irregular bone.

pri·mar·y os·si·fi·ca·tion cen·ter

(prī'mar-ē os'i-fi-kā'shŭn sen'tĕr) [TA]
The first site of bone formation in the shaft of a long bone or the body of an irregular bone.
Synonym(s): primary center of ossification.
References in periodicals archive ?
Although no change in disc height was observed between the 2 groups at 1 week postnatally, the primary ossification center of KO mice was abnormal (Figures 4(a) and 4(b)).
Generally, the primary ossification center is formed between the ages of 4-6, and the other centers emerge by the age of 12.
Some researchers suggest the presence of ventral and dorsal primary ossification center separately instead of one for centrum development of vertebra.
The actual etiology of this condition which is thought to arise from defect of fusion of two primary ossification centers of the clavicula is not known exactly.