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Joints of the skull bones
Last reviewed: 23.04.2024
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The bones of the skull are connected mainly by continuous joints, with the exception of the temporomandibular joint. These compounds are mainly represented in the form of seams in adults and interosseous membranes (syndesmosis) in newborns, as well as in synchondrosis. The bones of the roof of the skull are joined by dentate and scaly sutures. Between the medial margins of the right and left parietal bones is the sagittal suture (sutura sagittalis), between the frontal and parietal bones is the coronary suture (sutura coronalis), the parietal and occipital bone is the lambdoid suture (sutura lambdoidea). The sagittal, coronoid and lambdoid sutures are notched. Scales of the temporal bone are connected with the parietal bone and the large wing of the sphenoid bone with a scaly suture. The bones of the facial skull are joined by flat (harmonious) sutures. The names of individual seams are formed from the names of two connecting bones (frontal-latticed seam, etc.). Between the skull bones there are also unstable seams between parts of the same bone. These seams in the process of human life are replaced with bone tissue.
Continuous junction of the bones of the skull
|
Department of the skull |
Connection type |
Connection method |
|
The roof of the skull |
SYNDESMOZIS |
Toothed sutures: coronary, sagittal, (swept) lambdoid, Scaly seam |
|
The facial section of the skull |
SYNDESMOZIS |
Flat (garn) suture |
|
Joints of teeth with alveoli of jaws |
SYNDESMOZIS |
Impaction (tooth-alveolar connection) |
|
Base of skull |
Synchondroses (temporary), replaced by synostoses: wedge-occipital wedge-stony stony-occipital inter-occipital wedge-latticed |
In the area of the base of the skull there are also synchondroses formed by fibrous cartilage. The wedge-occipital synchondrosis (synchondrosis sphenooccipitalis) is located between the body of the sphenoid bone and the basilar part of the occipital bone. Between the pyramid of the temporal bone and the basilar part of the occipital bone is the stony-occipital synchondrosis (synchondrosis petrooccipitalis). With age, these synchondroses are gradually replaced with bone tissue (synostosis).
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