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Metopic Ridging
A metopic ridge is a condition with a palpable vertical ridge on the forehead of the Human skull, skull along the metopic suture line, which runs along the from the top of the forehead down to between the eyebrows or middle of the nose. It is sometimes called benign metopic ridge when differentiated from trigonocephaly ("triangle shaped forehead") which is also caused by premature closure of the metopic suture. It is usually somewhat subjectively determined where the diagnostic threshold lies between metopic ridge and the more severe trigonocephaly, but machine learning algorithms have been demonstrated to classify patients consistent with classifications done manually by experts. Signs and symptoms A benign metopic ridge presents itself as a slight or noticeable ridge in the metopic suture (also called frontal suture), that is running down the middle of a child's forehead. The child otherwise has a mostly normally shaped forehead and head. A metopic ridge is usually a benign a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crane Suture Metopique 01 04 2012 2 B
Crane or cranes may refer to: Common meanings * Crane (bird), a large, long-necked bird * Crane (machine), industrial machinery for lifting ** Crane (rail), a crane suited for use on railroads People and fictional characters * Crane (surname), including a list of people and fictional characters with the surname * Crane (given name), a list of people Places Barbados * The Crane, Saint Philip, Barbados United Kingdom * River Crane, Dorset * River Crane, London, a small river of London, branch to the Thames ** Crane (ward), an former electoral ward of Hillingdon London Borough Council that existed from 1978 to 2002 United States * Crane, Indiana, a town * Crane, Missouri, a town * Crane, Montana, a census-designated place and unincorporated community * Crane, Oregon, a census-designated place and unincorporated community * Crane County, Texas ** Crane, Texas, a city and the county seat * Crane, Virginia, an unincorporated community * Crane, Washington, an unincorporated community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fontanelle
A fontanelle (or fontanel) (colloquially, soft spot) is an anatomical feature of the infant human skull comprising soft membranous gaps ( sutures) between the cranial bones that make up the calvaria of a fetus or an infant. Fontanelles allow for stretching and deformation of the neurocranium both during birth and later as the brain expands faster than the surrounding bone can grow. Premature complete ossification of the sutures is called craniosynostosis. After infancy, the anterior fontanelle is known as the bregma. Structure An infant's skull consists of five main bones: two frontal bones, two parietal bones, and one occipital bone. These are joined by fibrous sutures, which allow movement that facilitates childbirth and brain growth. * Posterior fontanelle is triangle-shaped. It lies at the junction between the sagittal suture and lambdoid suture. At birth, the skull features a small posterior fontanelle with an open area covered by a tough membrane, where the two pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiocephaly
Plagiocephaly, also known as flat head syndrome, is a condition characterized by an asymmetrical distortion (flattening of one side) of the skull. A mild and widespread form is characterized by a flat spot on the back or one side of the head caused by remaining in a supine position for prolonged periods. Plagiocephaly is a diagonal asymmetry across the head shape. Often it is a flattening which is to one side at the back of the head, and there is often some facial asymmetry. Depending on whether synostosis is involved, plagiocephaly divides into two groups: synostotic, with one or more fused cranial sutures, and non-synostotic (deformational). Surgical treatment of these groups includes the deference method; however, the treatment of deformational plagiocephaly is controversial. Brachycephaly describes a very wide head shape with a flattening across the whole back of the head. Causes Slight plagiocephaly is routinely diagnosed at birth and may be the result of a restrictive int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metopism
Metopism is the condition of having a persistent metopic suture, or persistence of the frontal metopic suture in the adult human skull. Metopism is the opposite of craniosynostosis. The main factor of the metopic suture is to increase the volume of the anterior cranial fossa. The frontal bone includes the forehead, and the roofs of the orbits (bony sockets) of the eyes. The frontal bone has vertical portion (squama) and horizontal portion ( orbital part). Some adults have a metopic or frontal suture in the vertical portion. During the uterine period, there is a membranous tissue between the right and left halves of the frontal bones of the fetus. On each half, a primary ossification center appears about the end of the second month of the fetus. The primary ossification center extends to form the corresponding half of the vertical part (squama) and horizontal part (orbital part) of the frontal bone. At birth the frontal bone contains two portions, separated by the metopic (fron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scaphocephaly
Scaphocephaly or sagittal craniosynostosis is a type of cephalic disorder which occurs when there is a premature fusion of the sagittal suture. Premature closure results in limited lateral expansion of the skull, resulting in a characteristic long, narrow head. The skull base is typically spared. The word comes . Scaphocephaly is the most common of the craniosynostosis conditions and accounts for approximately 50% of all craniosynostosis. It is most commonly idiopathic (non-syndromic). Etiology Non-syndromic The underlying cause of the non-syndromic form is unknown. Over 100 mutations have been associated, including mutations in the FGFR genes. Several potential risk factors have been identified for craniosynostosis include: * Advanced maternal age * White maternal race * Maternal smoking * Male infant * Certain paternal occupations (e.g. agriculture, forestry, repairmen) Syndromic Sagittal craniosynostosis is seen in many conditions and syndromes: * Acrocephalosy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachycephaly
Brachycephaly (derived from the Ancient Greek '' βραχύς'', 'short' and '' κεφαλή'', 'head') is the shape of a skull shorter than average in its species. It is perceived as a cosmetically desirable trait in some domesticated dog and cat breeds, notably the pug and Persian, and can be normal or abnormal in other animal species. In humans, brachycephaly can appear both pathologically and non-pathologically as a result of normal human variation. It is particularly common in Mongolians and the Andamanese. In anthropology, human populations have been characterized as either dolichocephalic (long-headed), mesocephalic (moderate-headed), or brachycephalic (short-headed). The usefulness of the cephalic index was questioned by Giuseppe Sergi, who argued that cranial morphology provided a better means to model racial ancestry. When pathological, it is known as flat head syndrome, and it results from premature fusion of the coronal sutures, or from external deformation. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiocephaly
Plagiocephaly, also known as flat head syndrome, is a condition characterized by an asymmetrical distortion (flattening of one side) of the skull. A mild and widespread form is characterized by a flat spot on the back or one side of the head caused by remaining in a supine position for prolonged periods. Plagiocephaly is a diagonal asymmetry across the head shape. Often it is a flattening which is to one side at the back of the head, and there is often some facial asymmetry. Depending on whether synostosis is involved, plagiocephaly divides into two groups: synostotic, with one or more fused cranial sutures, and non-synostotic (deformational). Surgical treatment of these groups includes the deference method; however, the treatment of deformational plagiocephaly is controversial. Brachycephaly describes a very wide head shape with a flattening across the whole back of the head. Causes Slight plagiocephaly is routinely diagnosed at birth and may be the result of a restrictive int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papilledema
Papilledema or papilloedema is optic disc swelling that is caused by increased intracranial pressure due to any cause. The swelling is usually bilateral and can occur over a period of hours to weeks. Unilateral presentation is extremely rare. In intracranial hypertension, the optic disc swelling most commonly occurs bilaterally. When papilledema is found on fundoscopy, further evaluation is warranted because vision loss can result if the underlying condition is not treated. Further evaluation with a CT scan or MRI of the brain and/or spine is usually done. Recent research has shown that point-of-care ultrasound can be used to measure optic nerve sheath diameter for detection of increased intracranial pressure and shows good diagnostic test accuracy compared to CT. Thus, if there is a question of papilledema on fundoscopic examination or if the optic disc cannot be adequately visualized, ultrasound can be used to rapidly assess for increased intracranial pressure and help direct f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metopic Synostosis
The frontal suture is a fibrous joint that divides the two halves of the frontal bone of the skull in infants and children. Typically, it completely fuses between three and nine months of age, with the two halves of the frontal bone being fused together. It is also called the metopic suture, although this term may also refer specifically to a ''persistent frontal suture''. If the suture is not present at birth because both frontal bones have fused (craniosynostosis), it will cause a keel-shaped deformity of the skull called trigonocephaly. Its presence in a fetal skull, along with other cranial sutures and fontanelles, provides a malleability to the skull that can facilitate movement of the head through the cervical canal and vagina during delivery. The dense connective tissue found between the frontal bones is replaced with bone tissue as the child grows older. Persistent frontal suture In some individuals, the suture can persist (totally or partly) into adulthood, and is re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sutures From Top
Suture, literally meaning "seam", may refer to: Arts, entertainment, and media * ''Suture'' (album), a 2000 album by American Industrial rock band Chemlab * ''Suture'' (film), a 1993 film directed by Scott McGehee and David Siegel * Suture (band), an early 1990s band with Kathleen Hanna, Sharon Cheslow, and Doug Birdzell Healthcare * Suture (anatomy), a rigid joint between hard parts of animals ** Suture (joint), concerning the major joints in the bones of the cranium ** Ammonitic suture, the intersection of the septum with the outer shell in Ammonites ** Facial suture (trilobite), divisions in the cephalon (head) of most trilobites, along which the exoskeleton splits during molting * Surgical suture, a stitch used by doctors and surgeons to hold tissue together Science * Suture (geology), a major fault through an orogen An orogenic belt, orogen, or mobile belt, is a zone of Earth's crust affected by orogeny. An orogenic belt develops when a continental plate crumples and is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craniosynostosis
Craniosynostosis is a condition in which one or more of the fibrous sutures in a young infant's skull prematurely fuses by turning into bone (ossification), thereby changing the growth pattern of the skull. Because the skull cannot expand perpendicular to the fused suture, it compensates by growing more in the direction parallel to the closed sutures. Sometimes the resulting growth pattern provides the necessary space for the growing brain, but results in an abnormal head shape and abnormal facial features. In cases in which the compensation does not effectively provide enough space for the growing brain, craniosynostosis results in increased intracranial pressure leading possibly to visual impairment, sleeping impairment, eating difficulties, or an impairment of mental development combined with a significant reduction in IQ. Craniosynostosis occurs in one in 2000 births. Craniosynostosis is part of a syndrome in 15% to 40% of affected patients, but it usually occurs as an isol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
