Metopism

Medical condition

Metopism

Baby skull and metopic (frontal) suture [1]

Metopism is the condition of having a persistent metopic suture,[2] or persistence of the frontal metopic suture in the adult human skull.[3] Metopism is the opposite of craniosynostosis.[4] 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.[5] In uterine period in right and left half of frontal region of the fetus there is a membrane tissue. On each half a primary ossification center appears about the end of the second month of the fetus. 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 (frontal) suture. Metopism is the condition of having a persistent metopic suture. Metopic suture is regularly obliterated, except at its lower part, by the eighth year, but infrequently persists throughout life.[6] There is no single proven cause of metopism. The occurrence is from mild to serious situations. Visional, learning, and behavioral problems may happen in serious metopism. Some don't need any medical treatment. Surgery is a successful approach for those who need it. Treatment teams include: neurosurgeons, plastic surgeons, neurologists, oral and maxillofacial surgeons, audiologists, neuroscience nursing professionals, speech therapists, physical therapists, dentist, otolaryngologists, ophthalmologists, psychiatrists, psychologists and social workers.[7]

## Additional image

[edit]

Infant frontal bones have two portions

## References

[edit]

1. ^ "Frontal Bone". InnerBody.
2. ^ "Metopism Medical Definition - Merriam-Webster Medical Dictionary". merriam-webster.com.
3. ^ "Metopism -- Medical Definition". medilexicon.com.
4. ^ Haidar Kabbani-Talkad S. Raghuveer. "Craniosynostosis". aafp.org.
5. ^ Aaron Wong. "Frontal bone". radiopaedia.org.
6. ^ "II. Osteology. 5a. 3. The Frontal Bone. Gray, Henry. 1918. Anatomy of the Human Body". bartleby.com.
7. ^ Boston Childrens Hospital 2013. "Metopic Synostosis (Trigonocephaly) - Boston Children's Hospital". childrenshospital.org.`{{cite web}}`: CS1 maint: numeric names: authors list (link)

## Sources

[edit]

* Online version of Gray's Anatomy -- The complete 20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918. NB: This is the most recent American version that is in the public domain.
* First edition of Gray's Anatomy, 1858 (direct PDF link)

* v
* t
* e

Congenital malformations and deformations of musculoskeletal system / musculoskeletal abnormality

Appendicular
limb / dysmelia|

| Arms|

| clavicle / shoulder|

* Cleidocranial dysostosis
* Sprengel's deformity
* Wallis–Zieff–Goldblatt syndrome

|

hand deformity|

* Madelung's deformity
* Clinodactyly
* Oligodactyly
* Polydactyly

Leg|

| hip|

* Hip dislocation / Hip dysplasia
* Upington disease
* Coxa valga
* Coxa vara

|

knee|

* Genu valgum
* Genu varum
* Genu recurvatum
* Discoid meniscus
* Congenital patellar dislocation
* Congenital knee dislocation

foot deformity|

* varus
* Club foot
* Pigeon toe
* valgus
* Flat feet
* Pes cavus
* Rocker bottom foot
* Hammer toe

Either / both|

| fingers and toes|

* Polydactyly / Syndactyly
* Webbed toes
* Arachnodactyly
* Cenani–Lenz syndactylism
* Ectrodactyly
* Brachydactyly
* Stub thumb

|

reduction deficits / limb|

* Acheiropodia
* Ectromelia
* Phocomelia
* Amelia
* Hemimelia

multiple joints|

* Arthrogryposis
* Larsen syndrome
* RAPADILINO syndrome

Axial|

| Skull and face|

| Craniosynostosis|

* Scaphocephaly
* Oxycephaly
* Trigonocephaly

|

Craniofacial dysostosis|

* Crouzon syndrome
* Hypertelorism
* Hallermann–Streiff syndrome
* Oto-palato-digital syndrome
* Treacher Collins syndrome

other|

* Macrocephaly
* Platybasia
* Craniodiaphyseal dysplasia
* Dolichocephaly
* Greig cephalopolysyndactyly syndrome
* Plagiocephaly
* Saddle nose

Vertebral column|

* Spinal curvature
* Scoliosis
* Klippel–Feil syndrome
* Spondylolisthesis
* Spina bifida occulta
* Sacralization

Thoracic skeleton|

| ribs:|

* Cervical
* Bifid

|

sternum:|

* Pectus excavatum
* Pectus carinatum

other:|

* Poland syndrome

*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template