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A synchondrosis (or primary cartilaginous joint) is a type of cartilaginous joint where hyaline cartilage completely joins together two bones. [1] Synchondroses are different from symphyses (secondary cartilaginous joints), which are formed of fibrocartilage, and from synostosis (ossified junctions), which is the fusion of two or more bones.
When the cartilage was transplanted into the in vitro cultures, it was found that the cartilage from nasal septum grew as nearly as it did in vivo. In comparison, cartilage from mandibular condyle did not grow as well. Therefore, cartilage at cranial base synchondroses and nasal septum can act as growth centers, while condylar cartilage can't.
The portion of the chondrocranium that is associated with the notochord is termed the chordal chondrocranium and is formed from mesodermally-derived mesenchyme.The more rostral portion of the chondrocranium that lie anterior to the notochord constitutes the prechordal chondrocranium, and is derived primarily from neural crest-derived mesenchyme.
The xiphisternal joint (or xiphisternal symphysis) is a location near the bottom of the sternum, where the body of the sternum and the xiphoid process meet. It is structurally classified as a synchondrosis, and functionally classified as a synarthrosis.
The sternocostal joints, also known as sternochondral joints or costosternal articulations, are synovial plane joints of the costal cartilages of the true ribs with the sternum. [1]
Proton density weighted MRI of a knee with synovial chondromatosis. There are multiple intra-articular loose bodies located in the suprapatellar recess. [5]Diagnosis is by medical imaging; X-ray, CT scan and MRI. [1]
Unlike synchondroses, symphyses are permanent. [2] Examples. The more prominent symphyses are: the pubic symphysis; sacrococcygeal symphysis;
Benjamina is complete aside from the face, right occipital condyle, ethmoid, central sphenoid, petrous and mastoid processes. [4] Based on the spheno-occipital and jugular synchondroses, the specimen was not an adult at death. only being around 10-12 years of age.