Whereas, posteriorly growth is due to interstitial growth at spheno-occipital synchondrosis
.Cranial base center, sella turcica, forms anterior limb (from sella to nasion) and posterior limb (from sella to basion) of cranial base; forming an angle of 130o - 135o at sella.
Reported articulations include synchondrosis
, syndesmosis (O'Neal et al., 1995; Azurza & Sakellariou, 2001; Chiodo et al., 2002) and "some combination of both" (Burnett & Case).
The persistent neurocentral synchondrosis
results from failure of the cartilage segments to differentiate into bone.
Interestingly, one report found that the persistence of the spheno-occipital synchondrosis
, aggravated by the coexistence of basilar invagination, resulted in stenosis at the foramen magnum .
MRI disclosed the presence of an inflammatory process, bone fragment covered with cartilage, and what appears to be a degenerative synchondrosis
as a consequence of posteromedial impingement (Figure 3).
The vertebra of children are unique in that they have growth centers of the neurocentral synchondrosis
and both superior and inferior aspects of the vertebral body which can result in growth plate fractures and injuries from trauma, similar to growth plates of long bones.
Os trigonum which persists separately in 7-14% of the population, has cartilaginous synchondrosis
between the ossicle.
The van Neck-Odelberg disease is hyperostosis of ischiopubic synchondrosis
A coalition, or bar, is a bony ("synostosis"), cartilaginous ("synchondrosis
"), or fibrous ("syndesmosis") connection between two or more bones.
 Failure of fusion of XY complex with Z at the dento synchondrosis
or maintenance of transitory intervertebral disc at this point, produces an os odontoideum thought to be induced by excessive movement at the time of ossification of dens.
Ranly13 said synchondrosis
closed by ossification cannot be reacted again by injecting GH which indicates that GH treatments for short-statured children should start before the spheno-occipital synchondrosis
closes to ensure more growth promotion effects.