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Topic: Sagittal suture

	Age
		At lambda (pars lambdica) of lambdoid and sagittal sutures.
		At obelion (pars obelica) of the sagittal suture.
		At bregma (pars bregmatica of the coronal and sagittal sutures).
	www.redwoods.edu /Instruct/AGarwin/anth_6_age.htm (796 words)

	Scaphocephaly - Skull Base Institute
		Scaphocephaly, is the premature closure of the sagittal suture.
		The sagittal suture is the long suture on the top of the head that runs from front to back starting at the anterior fontanelle and extending backwards along the middle of the skull to the back of the head.
		The head typically is elongated in the anterior-posterior diameter and shortened in the biparietal diameter and the ridging of the sagittal suture is palpable.
	www.skullbaseinstitute.com /craniosynostosis/scaphocephaly.htm (384 words)

	Sagittal suture - Wikipedia, the free encyclopedia
		The sagittal suture (sutura sagittalis) is a dense, fibrous connective tissue joint between the two parietal bones of the skull.
		Two anatomical landmarks are found on the sagittal suture: the bregma and the vertex of the skull.
		The bregma is formed by the intersection of the sagittal and coronal sutures, and the vertex is the highest point on the skull and is many times near the midpoint of the sagittal suture.
	en.wikipedia.org /wiki/Sagittal_suture (182 words)

	Pediatric Skull Deformities
		The infant skull is composed of 7 flat membranous bones joined along their borders by condensations of dura and pericranium called "sutures." The sagittal suture forms the border between the paired parietal bones.
		Sutures also join the bones of the skull vault with the cartilage-derived bones of the skull base.
		The largest 2 fontanels occur at the intersection of the sagittal, coronal, and metopic sutures – the anterior fontanel – and at the intersection of the sagittal and lambdoid sutures – the posterior fontanel.
	www.ohsu.edu /neurosurgery/conditions/skull_deformities.shtml (360 words)

	eMedicine - Craniosynostosis : Article by Majid A Khan, MD (Site not responding. Last check: 2007-10-08)
		The anterior fontanel is at the junction of the frontal and parietal bones, and it represents the intersection of the metopic, coronal, and sagittal sutures.
		The anteroposterior diameter of the skull is increased, whereas the transverse diameter is decreased.
		The sagittal suture is fused, with widening of both the coronal and lambdoid sutures.
	www.emedicine.com /radio/topic195.htm (2998 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		One suture in the middle of the skull extends from the front of the head to the back.
		Sutures allow the bones to move during the birth process.
		There are two fontanelles (the space between the bones of an infant's skull where the sutures intersect) that are covered by tough membranes.
	www.ecommunity.com /health/index.aspx?pageid=P01840 (363 words)

	San Diego Craniofacial Surgery by Plastic Surgeon Steven R. Cohen MD
		Craniosynostosis is the premature closure or fusion of the open areas or sutures between the skull plates in an infant's skull.
		The metopic suture lies along the midline of the forehead and, when fused prematurely, leads to a ridge in the middle of the forehead and a triangular shape to the skull (trigonocephaly).
		Sagittal Craniosynostosis is one of the more common forms of this disorder, and like the metopic form, it accounts for approximately 40% of all single-suture synostosis.
	www.facesplus.com /craniofacial_non_syndromic.html (981 words)

	Craniosynostosis (Site not responding. Last check: 2007-10-08)
		These sutures remain open and soft during infancy to allow the skull to expand as the brain grows underneath the bone plates.
		Below are descriptions of craniosynostosis affecting the different sutural areas of the skull with clinical examples of patients treated at the North Carolina Children's Hospital by Dr. Ann Ritter and Dr. Ramon Ruiz.
		Premature closure of the sagittal suture or the long suture on the top of the head is the most common form of craniosynostosis.
	viper.med.unc.edu /surgery/neurosurgery/craniosynostosis.html (1610 words)

	Craniosynostosis - June 15, 2004 - American Family Physician
		In infants with lambdoid synostosis, the ear is displaced posteriorly toward the fused suture.
		2,3 The sagittal suture is affected in 40 to 60 percent of cases, the coronal suture in 20 to 30 percent of cases, and the metopic suture in less than 10 percent of cases; true lambdoid synostosis is rare.
		The ipsilateral ear in lambdoid synostosis is displaced posteriorly toward the fused suture compared with the anterior displacement that occurs in infants with deformational plagiocephaly.
	www.aafp.org /afp/20040615/2863.html (2949 words)

	Craniosynostisis - Children's Healthcare of Atlanta
		Subsequently, this suture is the separation between the parietal bones and thus allows lateral growth of the mid-portion of the skull.
		Early closure of the sagittal suture restricts lateral growth and creates a head that is narrow from ear to ear.
		As with sagittal synostosis, brain growth is restricted parallel to the involved suture.
	www.choa.org /default.aspx?id=1183 (659 words)

	Aging and Sexing Using Cranial Sutures
		Use of suture closure as an age estimate is predicated upon the hypothesis that suture closure is part of the aging process.
		Cranial sutures were viewed as controlling both the growth of the brain and, therefore, the shape of the skull.
		During the 19th century, it was observed that cranial union first occurs in the sagittal suture, and that it occurred earlier within the cranium than upon the exterior (Todd and Lyon 1924:328).
	www.geocities.com /xerexes/Cranial_sutures.html (1773 words)

	The Calcutta Aesthetic Surgery Clinic
		In sagittal synostosis (scaphocephaly), the sagittal suture is closed.
		The sagittal suture is the most common single suture involved in craniosynostosis.
		The incidence of sagittal synostosis in the population is approximately 1 in 4200 births.
	www.calcuttayellowpages.com /adver/101920n.html (531 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		The suture between the pair of parietal bones and the frontal bone is the coronal suture.
		On the inside, running along the sagittal suture, lies the superior sagittal sinus, a major route of venous drainage from the brain.
		At birth there is a soft spot where the sagittal suture meets the coronal suture, the anterior fontanelle.
	www.med.mun.ca /anatomyts/head/pariet.htm (106 words)

	Anatomical Nomenclature Information on Healthline
		The sutures eventually fuse and become rigid and ossified near the end of puberty or early in adulthood.The sagittal suture unties the parietal bones of the skull along the midline of the body.
		The suture is used as an anatomical landmark in anatomical nomenclature to establish what are termed sagittal planes of the body.
		The primary sagittal plane is the sagittal plane that runs through the length of the sagittal suture.
	www.healthline.com /galecontent/anatomical-nomenclature (1026 words)

	Radiology, University of Rochester Medical Center
		Sagittal suture is involved in 50-58% of the cases.
		Scaphocephaly – AP elongation and biparietal narrowing of the skull from the fusion of the sagittal suture.
		Anterior plagiocephaly – fusion of one coronal suture.
	www.urmc.rochester.edu /smd/Rad/neurocases/Neurocase174.htm (259 words)

	AANS.org \| Education and Meetings \| AANS Scientific Journals \| Neurosurgical Focus
		Suture involvement was as follows: 17 of 36 sagittal plus one coronal; seven of 36 sagittal plus metopic; six of 36 sagittal plus one lambdoid; and six of 36 metopic plus one coronal.
		The classification of craniosynostoses depends on a combination of criteria: 1) whether the sutural disease is part of a syndrome; 2) the morphological appearance of the patient; 3) the actual sutures involved; and 4) progression of the disease over time.[1] Using these criteria, it is possible to classify the vast majority of craniosynostoses.
		Suture involvement consisted of: 17 of 36 sagittal plus one coronal; seven of 36 sagittal and metopic; six of 36 sagittal plus one lambdoid; six of 36 metopic plus one coronal.
	www.aans.org /education/journal/neurosurgical/dec96/1-6-p1.asp (2544 words)

	Craniosynostosis - Skull Base Institute
		If one or more of the sutures closes early, it Causes the skull to expand in the direction of the open sutures as the brain is growing normally and will take the path of least resistance which may result in an abnormal head shape.
		Approximately 63% of all cases occur in males but the male preponderance is 75-80% in sagittal and metopic synostosis (scaphocephaly and trigonocephaly), and the female preponderance is approximately 75% in coronal synostosis (anterior plagiocephaly), and there is a slight female preponderance in (brachycephaly).
		A generous craniectomy to "reopen" the prematurely fused sutures with extension to the adjacent sutures, in addition to restructuring or remodeling of the involved skull bones when required, is the basic procedure.
	www.skullbaseinstitute.com /craniosynostosis/craniosynostosis.htm (1532 words)

	Cranial sutures (via CobWeb/3.1 planetlab1.netlab.uky.edu) (Site not responding. Last check: 2007-10-08)
		Cranial sutures are fibrous bands of tissue that connect the bones of the skull.
		The spaces between the bones where the sutures are (sometimes referred to as "soft spots") are called fontanels (the anterior fontanel and the posterior fontanel).
		The fibers (sutures) and spaces between the cranial bones (fontanels) are necessary for the infant's brain growth and development.
	www.umm.edu.cob-web.org:8888 /ency/article/002320.htm (480 words)

	UNSW Embryology- Musculoskeletal System - Skull Development
		The bones enclosing the brain have large flexible fibrous joints (sutures) which allow firstly the head to compress and pass through the birth canal and secondly to postnatally expand for brain growth.
		Suture abnormalities are classified as either "simple" (only one suture involved) or "compound" (two or more sutures involved).
		Since noggin misexpression prevents cranial suture fusion in vitro and in vivo, we suggest that syndromic fgfr -mediated craniosynostoses may be the result of inappropriate downregulation of noggin expression.
	embryology.med.unsw.edu.au /Notes/skmus8a.htm (925 words)

	Cranial Landmarks
		In those cases where the most anterior segment of the sagittal suture deflects to one side, the point of the junction of the two sutures must be projected.
		In case of the presence of a “Fontanelle” bone, a straight extension of the sagittal suture is drawn across the forehead while a similar connection is drawn between the two Sections of the coronal suture.
		In such cases the general direction of the two branches of the lambdoidal sutures is determined and two straight lines are projected along the branches of the suture placing Lambda at the point where these lines meet with one another and with the sagittal suture (Martin 1956:444).
	www.redwoods.edu /Instruct/AGarwin/anth_6_cranial-landmarks.htm (1941 words)

	JNS: Pediatrics Abstract - Reformation of the sagittal suture following surgery for isolated sagittal craniosynostosis. ...
		The aim of this study was to determine the pattern of postoperative suture reformation in children who have undergone surgery for isolated sagittal synostosis and assess possible factors related to suture reformation.
		The radiographs were evaluated for sagittal suture morphology and patency of the coronal and lambdoid sutures.
		Surgery involved at a minimum 1) a vertex craniectomy, characterized by removal of the sagittal suture and a 1.5- to 2.5-cm piece of adja- cent parietal bone with the attached pericranium bilaterally, and 2) parietal osteotomies and/or craniectomies.
	www.thejns-net.org /peds/issues/v105n2/abs/p1050115.html (382 words)

	Abnormal Head Shape (Site not responding. Last check: 2007-10-08)
		Diagram of the fontanelles and sutures in the skull.
		The sagittal suture runs from front to back, the two coronal sutures run down the sides, and the metopic suture runs down the front of the forhead.
		Those with sagittal suture involvement have long, thin skulls, while those with coronal suture involvement have a flat, short head on one or both sides, depending on whether one or both coronal sutures are involved.
	www.pedisurg.com /PtEduc/Abnormal_Head_Shape.htm (1026 words)

	Sagittal crest - Wikipedia, the free encyclopedia
		A sagittal crest is a ridge of bone running lengthwise along the midline of the top of the skull (at the sagittal suture) of many mammalian and reptilian skulls, among others.
		A sagittal crest usually develops during the childhood of an animal in conjunction with the growth of the temporalis muscle, as a result of convergence and gradual heightening of the temporal lines.
		A sagittal crest tends to be present on the skulls of adult animals that rely on powerful biting and clenching of their teeth, usually as a part of their hunting strategy.
	en.wikipedia.org /wiki/Sagittal_crest (359 words)

	eMedicine - Craniosynostosis : Article Excerpt by: Majid A Khan, MD (Site not responding. Last check: 2007-10-08)
		In the isolated cases, the sagittal suture is affected most often (55%), followed by the coronal (20%), lambdoid (5%), and metopic (5%) sutures.
		The posterior fontanel, located at the junction of the lambdoid and sagittal sutures, closes by the age of 3 months.
		Mature suture closure occurs by the age of 12 years, but completion of fusion continues into the third decade of life and beyond.
	www.emedicine.com /radio/byname/craniosynostosis.htm (612 words)

	Pediatrics \| Paediatrics \| Pediatric Education \| Paediatric Education - PediatricEducation.org
		Posteriorly, at the confluence of the superior median, lamboid and sagittal sutures is the posterior fontanelle.
		The bones and suture lines may be overriding each other after birth because of molding of the skull through the birth process.
		Suture lines felt to be prominently ridged may be an indication of craniosynostosis or premature closure of the sutures.
	www.pediatriceducation.org /2006/04/17 (1045 words)

	Craniosynostosis, Sagittal, Coronal, Metopic, Lambdoidal - University Health System, San Antonio, Texas
		The affected suture is removed (open) and the brain is allowed to grow normally and aided with the postoperative helmet therapy.
		Dissection endoscopic release of the closed coronal suture is performed via a small single incision located halfway between the soft spot and the ear on the involved side.
		In a similar fashion, the stenosed lambdoid suture is removed with the aid and visualization of an endoscope.
	www.craniosynostosis.net /endoscopic.html (509 words)

	MedlinePlus Medical Encyclopedia: Craniosynostosis
		Sutures are connections that separate each individual skull bones.
		Which suture is involved determines the abnormal shape of the head.
		Metopic synostosis is a rare form of craniosynostosis that affects the suture close to the forehead.
	www.nlm.nih.gov /medlineplus/ency/article/001590.htm (626 words)

	Answers to Questions in the manual - Week 12
		The sagittal suture which in the midline from the top of the skull backwards.
		The coronal suture at right angles to the sagittal, at the anterior end of the sagittal suture.
		The fibrous tissue undergoes ossification and sutures are obliterated.
	www.lab.anhb.uwa.edu.au /hsd212/02weekpages/WK12/week12_4aLabAns.htm (477 words)

	Craniosynostosis Information on Healthline
		The sagittal form of the disorder, in which the sagittal suture closes prematurely, is the most common form of craniosynostosis, occurring in three to five of every 1,000 babies, typically males.
		Closure of the sagittal suture (located at the top of the skull and to the rear) produces an elongated head, prominent and protruding forehead, and narrow temples.
		Closure of the metopic suture (which runs down the front-middle portion of the skull) results in a pointed-shaped forehead, triangular-shaped skull, closer-than-normal eyes, and a protruding rear portion of the skull.
	www.healthline.com /galecontent/craniosynostosis-1 (617 words)

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