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Topic: Lambdoidal suture

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	Skull (upper view) (Site not responding. Last check: 2007-10-10)
		Coronal suture: seam between the frontal bone and the parietals.
		Parietal foramen: cavities of the parietal bone near the sagittal suture.
		Lambdoidal suture: seam between the occipital bone and the parietals.
	www.infovisual.info /03/017_en.html (70 words)

	The Sutural System of the Cranium \| Harvey Getzoff, DC, DICS
		The sutural tissue is continuous with the periosteum of the skull and, eventually, the dural coverings of the brain and spinal cord.
		The temporal/sphenoidal suture is both squamosal with temporal overlapping the sphenoid at its superior half, and serrated in the lower half.
		The malar/sphenoidal suture is a squamosal suture with the sphenoid overlapping the malar.
	www.chiroweb.com /archives/14/10/12.html (751 words)

	Gray, Henry. 1918. Anatomy of the Human Body. Page 183
		The squamosal suture arches backward from the pterion and connects the temporal squama with the lower border of the parietal: this suture is continuous behind with the short, nearly horizontal parietomastoid suture, which unites the mastoid process of the temporal with the region of the mastoid angle of the parietal.
		Extending from above downward and forward across the cranium are the coronal and lambdoidal sutures; the former connects the parietals with the frontal, the latter, the parietals with the occipital.
		The lambdoidal suture is continuous below with the occipitomastoid suture between the occipital and the mastoid portion of the temporal.
	www.bartleby.com /107/pages/page183.html (684 words)

	The Exterior of the Skull - Wikimd (Site not responding. Last check: 2007-10-10)
		The surface is traversed by three sutures, viz.: (1) the coronal sutures nearly transverse is direction, between the frontal and parietals; (2) the sagittal sutures medially placed, between the parietal bones, and deeply serrated in its anterior two-thirds; and (3) the upper part of the lambdoidal suture between the parietals and the occipital.
		The point of junction of the sagittal and coronal suture is named the bregma that of the sagittal and lambdoid sutures, the lambda they indicate respectively the positions of the anterior and posterior fontanelles in the fetal skull.
		In or near the occipitomastoid suture is the mastoid foramen for the passage of the mastoid emissary vein.
	www.wikimd.org /index.php?title=The_Exterior_of_the_Skull (3642 words)

	Craniosynostosis: Encyclopedia of Neurological Disorders
		As of 2004, the favored hypothesis is that the protein that normally functions to ensure that the formation of the cranial sutures occurs at the right time in development somehow goes awry and causes premature fusion of the bones of the brain.
		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.
		Finally, closure of the lambdoidal suture (located at the back of the skull) produces a mild flattening of the back of the head, forward-shifted ears, and the coronal symptoms.
	health.enotes.com /neurological-disorders-encyclopedia/craniosynostosis (1001 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).
		The lambdoid suture is located along the back of the head and it may fuse prematurely on one side or on both sides.
	www.facesplus.com /craniofacial_non_syndromic.html (981 words)

	Johns Hopkins Epidemiology of Cranio
		These sutures are open during the prenatal and early postnatal developmental periods, which allows passage through the birth canal and accommodation of the rapidly growing brain.
		The particular defect depends on which of the sutures are closed (sagittal, coronal, metopic, lambdoidal or squamosal) and the amount of compensatory growth across the sutures that remain open.
		Synostosis of one lambdoidal suture produces bulging of the forehead on the opposite side known as "compensational frontal plagiocephaly" (Brueton and Mulliken, 1992).
	www.cappskids.org /EpidemiologyOfCranio.htm (1155 words)

	BIOMATERIALS GROUP - METU
		Suture sizes are given by a number representing diameter ranging in descending order from 10 to 1 and then 1-0 to 12-0, 10 being the largest and 12-0 being the smallest at a diameter smaller than a human hair.
		Such sutures are generally not naturally occurring materials (with the exception of silk); some (silk and nylon) while being classified as nonabsorbable actually dissolve after a long period of time compared to that of the absorbable materials.
		Sutures are tested immediately after removal from their sterile packages without drying or conditioning, except when testing for compliance with BP (British Pharmacopoeia) or EP (European Pharmacopoeia) requirements which specify prior conditioning as described in the monographs for various suture types.
	www.biomed.metu.edu.tr /courses/term_papers/AyseKaradeniz.htm (6250 words)

	NeurosurgeryToday.org \| What is Neurosurgery \| Patient Education Materials \| craniosynostosis and craniofacial disorders
		The coronal suture is located on the side of the head extending from the soft spot to the area in front of the ear.
		The lambdoidal suture is located at the back of the head between the occipital and parietal bones.
		The metopic suture is located between the soft spot and the root of the nose, allowing the forehead to grow normally and the eye sockets to separate correctly.
	www.neurosurgerytoday.org /what/patient_e/craniosynostosis.asp (1718 words)

	Gray, Henry. 1918. Anatomy of the Human Body. Page 135
		Its inner surface is marked by a deep groove, sometimes a canal, for the anterior divisions of the middle meningeal artery.
		The occipital angle is rounded and corresponds with the point of meeting of the sagittal and lambdoidal sutures—a point which is termed the lambda; in the fetus this part of the skull is membranous, and is called the posterior fontanelle.
		The mastoid angle is truncated; it articulates with the occipital bone and with the mastoid portion of the temporal, and presents on its inner surface a broad, shallow groove which lodges part of the transverse sinus.
	www.bartleby.com /107/pages/page135.html (700 words)

	Radiology In Ped Emerg Med, Vol 5, Case 9
		Sutures are generally sinusoidal in appearance and in their standard anatomic locations (coronal, sagittal, and labdoidal).
		Two smaller sutures on each side of the skull are present in the lower skull adjacent to the mastoid; the parietomastoid suture and the occipitomastoid suture.
		The lambdoidal (L) and coronal (C) sutures are identified.
	www.hawaii.edu /medicine/pediatrics/pemxray/v5c09.html (1208 words)

	The axial skeleton Chapter 7
		Although the suture generally disappears by age 8 as the bones fuse, the adult skull commonly retains traces of the suture line.
		The sphenoidal fontanels are at the junctions between the squamous sutures and the coronal suture.
		The mastoid fontanels are at the junctions between the squamous sutures and the lambdoidal suture.
	campus.udayton.edu /~brahler/courses/HSS305/axial_notes.htm (8647 words)

	Gray's Anatomy : II. Osteology - usmle forum
		On and above the glabella a trace of the frontal suture sometimes persists; beneath it is the frontonasal suture, the mid-point of which is termed the nasion.
		The floor is directed upward and lateralward, and is of less extent than the roof; it is formed chiefly by the orbital surface of the maxilla; in front and laterally, by the orbital process of the zygomatic bone, and behind and medially, to a small extent, by the orbital process of the palatine.
		In the frontoethmoidal suture are the anterior and posterior ethmoidal foramina, the former transmitting the nasociliary nerve and anterior ethmoidal vessels, the latter the posterior ethmoidal nerve and vessels.
	www.usmleweb.com /reference/gray/asub46 (4309 words)

	Lambdoid suture - Wikipedia, the free encyclopedia
		The lambdoid suture (or Lambdoidal suture) is a dense, fibrous connective tissue joint that separates the parietal and temporal bones of the skull from the occipital bone.
		If certain bones of the skull grow too fast, then craniosynostosis (premature closure of the sutures) may occur.
		If the lambdoid suture closes too soon on one side, the skull will appear twisted and asymmetrical, a condition called "plagiocephaly."
	en.wikipedia.org /wiki/Lambdoid_suture (145 words)

	Craniofacial Anomalies - Craniosynostosis
		The normal skull consists of several plates of bone that are separated by sutures.
		The sutures (fibrous joints) are found between the bony plates in the head.
		Craniosynostosis is a condition in which the sutures close too early, causing problems with normal brain and skull growth.
	www.musckids.com /health_library/craniofacial/cranio.htm (1184 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)

	Center for Reconstructive Pediatrics - The University of Texas Health Science Center at San Antonio
		Premature fusion of skull sutures at birth causes deformation of the skull shape.
		Other common conditions include fusion of the uni-coronal suture leading to anterior plagiocephaly, metopic suture leading to trigonocephaly, bicoronal suture leading to brachycephaly, and lambdoidal suture producing posterior plagiocephaly.
		The surgical release of the fused suture is often performed early in conjunction with neurosurgery.
	www.surgery.uthscsa.edu /plastic/craniofacial.asp (1266 words)

	Lambdoidal Synostosis (Site not responding. Last check: 2007-10-10)
		Also known as occipital plagiocephaly, the lambdoidal suture closes early and leads to a flattening of the back of the head on the side of the sutural closure.
		There are compensatory changes in the shape of the head that cause a bulging of the opposite side in the back as well as bulging of the forehead on the opposite side.
		The ear on the closed side is often displaced backward as compared to the opposite side.
	cpmcnet.columbia.edu /dept/nsg/PNS/cf/lambdoid.html (76 words)

	Neurological Disorders - Craniosynostosis (Site not responding. Last check: 2007-10-10)
		Premature closure of the sutures may also cause the pressure inside of the head to increase and the skull or facial bones to change from a normal, symmetrical appearance.
		This suture runs from the top of the head down the middle of the forehead, toward the nose.
		Early closure of this suture may result in a prominent ridge running down the forehead.
	www.driscollchildrens.org /esp/Greystone/neuro/cranio_jh.htm (1172 words)

	Introduction, part 2 (Site not responding. Last check: 2007-10-10)
		The major sutures can be identified from a similar "birds' eye view".
		The large paired parietal bone plates meet at the sagittal suture.
		Finally, each parietal bone plate meets the occipital bone plate at the lambdoidal suture.
	cpmcnet.columbia.edu /dept/nsg/PNS/cf/cf_intro2.html (61 words)

	On Two Widely Contrasted Forms of the Human Cranium
		The coronal suture is open, throughout its whole extent, on both the inner and the outer faces of the skull, as are the lambdoidal, occipito-mastoid, alisphenoidal, [217] squamosal, nasal and fronto-nasal sutures.
		But the sagittal suture is so absolutely obliterated, that not a trace of it is discernible on either the outer, or the inner, surfaces of the skull (figs.
		Thus the whole forehead, with the coronal suture, is thrown backwards in A, and the occipital plane, partaking in the same movement, forms a more open angle with the basicranial axis than that of B.
	aleph0.clarku.edu /huxley/SM3/Cran.html (4587 words)

	Craniosynostosis / Craniofacial Anomaly - Plastic Surgery Health Guide (Site not responding. Last check: 2007-10-10)
		In addition, the eyes may be spaced wide apart and have droopy eyelids, and fingers may be abnormally short and webbed.
		The degree of the problems is dependent on the severity of the craniosynostosis, the number of sutures that are fused, and the presence of brain or other organ system problems that could affect the child.
		Genetic counseling may be recommended by the physician to evaluate the parents of the child for any hereditary disorders that may tend to run in families.
	www.umm.edu /plasticsurgery/cranio.html (1432 words)

	Diagnosis and Management of Positional Head Deformity - May 1, 2003 - American Family Physician
		Confirm patency of sutures by radiography of the head and/or computed tomographic scan of the head with three-dimensional reconstruction.
		The helmet eliminates the tendency for the infant to continue to lie on the flattened area of the skull and allows the rapidly growing skull to expand into areas unopposed by the helmet.
		If the sutures appear poorly visualized or closed, a computed tomographic (CT) scan of the head with three-dimensional reconstruction should be obtained.
	www.aafp.org /afp/20030501/1953.html (2162 words)

	The Skull
		The joints between bones of the skull are immovable and called sutures.
		Where the parietal bones meet the frontal is referred to as the
		The suture between the parietals and the temporal bone is referred to as the
	www.mnsu.edu /emuseum/biology/humananatomy/skeletal/skull.html (317 words)

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