Classification & external resources
Trigonocephaly is a type of cephalic disorder. This is the premature fusion of the metopic suture (part of the frontal suture which joins the two halves of the frontal bone of the skull) in which a V-shaped abnormality occurs at the front of the skull. It is characterized by the triangular prominence of the forehead and closely set eyes. Genetic testing may be offered to determine the cause and recurrence risk.
Additional recommended knowledge
Surgery can greatly reduce the visual effects of trigonocephaly. It can also help address comorbid elevated intracranial pressure.
It is believed that the first surgery to correct the disorder was successfully completed in early 1962 in San Diego, California, on a six-month-old girl.
- ^ Shimoji T, Tomiyama N (2004). "Mild trigonocephaly and intracranial pressure: report of 56 patients". Childs Nerv Syst 20 (10): 749–56. doi:10.1007/s00381-004-0970-y. PMID 15185114.
- ^ Anerson FM, Gwinn JL, Todt JC (1962). "Trigonocephaly. Identity and surgical treatment". J. Neurosurg. 19: 723–30. PMID 13861226.
|Congenital malformations and deformations of musculoskeletal system (Q65-Q79, 754-756)|
|Limbs||hip: Dislocation of hip/Hip dysplasia
feet (Club foot, Flat feet, Pes cavus)
head, face, spine and chest: skull, face and jaw (Dolichocephaly, Plagiocephaly) - Scoliosis - chest (Pectus excavatum, Pectus carinatum)
Polydactyly/Syndactyly (Webbed toes)
reduction deficits (Ectrodactyly, Amelia, Phocomelia)
upper limb (Cleidocranial dysostosis, Madelung's deformity, Sprengel's deformity)
knee (Genu valgum, Genu varum)
|Skull and face bones||Craniosynostosis (Scaphocephaly) - Trigonocephaly - Oxycephaly - Crouzon syndrome - Hypertelorism - Macrocephaly - Treacher Collins syndrome - Platybasia|
|Spine and bony thorax||Klippel-Feil syndrome - Spondylolisthesis - Cervical rib - Bifid rib|
|Osteochondrodysplasia||growth of tubular bones and spine: Achondrogenesis - Thanatophoric dysplasia - Short rib-polydactyly syndrome - Chondrodysplasia punctata (Rhizomelic chondrodysplasia punctata, Conradi-Hünermann syndrome), Achondroplasia (Hypochondroplasia, Osteosclerosis congenita) - Ellis-van Creveld syndrome - Spondyloepiphyseal dysplasia congenita|
Osteogenesis imperfecta - McCune-Albright syndrome - Osteopetrosis - Metaphyseal dysplasia - Hereditary multiple exostoses - Osteopoikilosis - Chondrodystrophy - Osteodystrophy
|Other||abdominal wall (Congenital diaphragmatic hernia, Omphalocele, Gastroschisis, Prune belly syndrome) - Ehlers-Danlos syndrome|
|See also non-congenital conditions (M, 710-739)|