Wormian bones


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small irregular plates of bone often interposed in the sutures between the large cranial bones.

See also: Wormian

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
In addition, bones are classified into different types based on their shape, including long, short, flat, irregular, sesamoid, pneumatized, and sutural or wormian bones. Long bones are tubular bones of the body, for example, humerus and femur and are relatively long and slender (1).
HCS is a multisystem disorder characterized by acro-osteolysis of distal phalanges, wormian bones, severe osteoporosis with fractures, short stature, cardiac malformations, central nervous system involvement, dental anomalies, cystic renal disease, and craniofacial dysmorphism [4, 5].
Hajdu-Cheney syndrome (HCS) is a rare disorder which is characterized by developmental delay, craniofacial anomalies, congenital heart defects, hearing deficit, polycystic kidneys, and bone abnormalities, including progressive osteoporosis, acroosteolysis, wormian bones, and abnormal bone fractures.[1] Truncating mutations in Notch homolog protein 2 gene ( NOTCH2 ) are the principal cause of HCS.
The clavarium, base of skull and orbital rims were dense, widened sutures with intra sutural wormian bones, small facial bones with hypoplastic maxillae and obtuse angle of mandible (Fig.
These include blue sclera, dentinogenesis imperfecta, hyperlaxity of ligaments and skin, hearing impairment, and presence of wormian bones on skull radiographs.
X-ray skull showed multiple wormian bones, widened sutures and patent anterior fontanel and occipitalization of C1 vertebrae [Figure 3].
The radiologist's report included general increase in bone density, craniofacial disproportion, open fontanels, wormian bones, hypoplasia of clavicle, hypoplastic distal phalanges with absence of distal tufts, mild coxa valga deformity (a deformity of the hip where the angle formed between the head and neck of the femur and its shaft is increased, usually above 135[degrees]) (Figure 3), and spondylosis of L4.
Diffuse osteopenia, prominent vascular markings in skull, thin and large calvarium with shallow diploic space, multiple wormian bones, small mandible with infantile obtuse angle and short ascending rami, hypoplastic facial bones, open cranial fontanelles, thin short clavicles, dwarfism, abnormally gracile ribs involving the posterior segments of the upper ribs, slender long bones, kyphosis, coxa valga, and progressive acroosteolysis of the terminal phalanges were the major roentgen findings previously reported.
Other features of fronto-occipital head shaping are an increased suture complexity (interdigitation), especially of the lambdoid suture on the back of the skull, and a higher prevalence of posteriorly placed wormian bones within this suture (Gerszten 1993:94; Gottlieb 1978:213-4; O'Loughlin 2004:152; Tiesler 2014:44-5; but see also El-Najjar and Dawson 1977:158-9).
The influence of experimental deformation on neurocranial Wormian bones in rats.