Cranial sutures
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- This article is about joints in the bones of the cranium. There is also an article about sutures as features of a wide range of animals. "Suture" also has other meanings in other contexts:
Cranial sutures are the joints between the bones of the skull (or "cranium"), bound together by Sharpey's fibres. A tiny amount of movement is permitted at sutures, which contributes to the compliance and elasticity of the skull.
It is normal for many of the bones of the skull to remain unfused at birth. The term "fontanelle" is used to describe the resulting "soft spots". The relative positions of the bones continue to change during the life of the adult (though less rapidly), which can provide useful information in forensics and archaeology. In old age, cranial sutures may ossify (turn to bone) completely.
Contents |
List of sutures
Most sutures are named for the bones they articulate, but some have special names of their own.
Primarily visible from the side (norma lateralis)
- Coronal suture - between the frontal and parietal bones
- Lambdoid suture - between the parietal bones and the occipital boneis it the osteror sinus
- Occipitomastoid suture
- Parietomastoid suture
- Sphenofrontal suture
- Sphenoparietal suture
- Sphenosquamosal suture
- Sphenozygomatic suture
- Squamosal suture - between the parietal and the temporal bone
- Zygomaticotemporal suture
- Zygomaticofrontal suture
Primarily visible from front (norma frontalis) or above (norma verticalis)
- Frontal suture / Metopic suture - between the two frontal bones, prior to the fusion of the two into a single bone
- Sagittal suture - along the midline, between parietal bones
Primarily visible from below (norma basalis) or inside
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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
