Synostosis (plural: synostoses) is fusion of two or more bones. It can be normal in puberty, fusion of the epiphyseal plate to become the epiphyseal line, or abnormal. When synostosis is abnormal it is a type of dysostosis. Examples of synostoses include:
craniosynostosis – an abnormal fusion of two or more cranial bones;
radioulnar synostosis – the abnormal fusion of the radius and ulna bones of the forearm;
tarsal coalition – a failure to separately form all seven bones of the tarsus (the hind part of the foot) resulting in an amalgamation of two bones; and
syndactyly – the abnormal fusion of neighboring digits.
the abnormal fusion of neighboring digits. Synostosis within joints can cause ankylosis. Radioulnar synostosis is one of the more common failures of separation...
a clinical description of unilateral coronal synostosis. Children born with unilateral coronal synostosis develop due to compensatory mechanisms a skew...
treatment of post-traumatic radioulnar synostosis. Indication for the surgical treatment of congenital radioulnar synostosis include severe disability due to...
metopic synostosis surgery is persistently good with reoperation hazards below 20%. In 1981 Anderson advised that craniofacial operations for synostosis should...
metatarsal synostosis, and polydactyly. A syndromic form of syndactyly known as syndactyly type V has metacarpal and metatarsal synostosis as symptoms...
associated with fragile X syndrome and Prader–Willi syndrome. Metopic synostosis, the early closure of metopic suture during skull development in children...
Cohen syndrome (also known as Pepper syndrome or Cervenka syndrome) is a very rare autosomal recessive genetic disorder with varied expression, characterised...
together, the ankylosis is termed osseous or complete and is an instance of synostosis. Excision of a completely ankylotic shoulder or elbow may restore free...
of the occipital bone; also associated with isolated mendosal suture synostosis. Clinocephaly– flat cranium due to loss of cranial convexity; top of head...
muscle tone Joint hyperflexibility Obesity Open bite Flat feet Radioulnar synostosis Strabismus Tall stature Taurodontism Tremor Other symptoms may include...
High frequency of middle ear infections Rib synostosis Scoliosis Small foot Strabismus Tarsal synostosis Telecanthus Upslanted palpebral fissures Broad...
increased height, clinodactyly (incurved pinky fingers), and radioulnar synostosis (fusion of the long bones in the forearm). Tetrasomy X is a rare condition...
needed] The joint usually ossifies by the fourth decade of life, forming a synostosis.[citation needed] It is in line with[clarification needed] the T9 vertebra...
the head and there is often some facial asymmetry. Depending on whether synostosis is involved, plagiocephaly divides into two groups: synostotic, with one...
view. Right hand. Deep dissection. Posterior (dorsal) view. Metacarpal synostosis Carpometacarpal bossing This article incorporates text in the public domain...
observed in tetrasomy and trisomy X, while clinodactyly and radioulnar synostosis are seen in all sex chromosome aneuploidies and taurodontism is specifically...
osteochondrodysplasia). When the disorder involves the joint between two bones, the term synostosis is often used. "dysostosis" at Dorland's Medical Dictionary[dead link]...
and fingernails. The condition also led Berryman to develop cranial synostosis, requiring him to undergo cranial reconstructive surgery as a child. He...
error during the dividing of embryonic cells in utero. Other causes of synostosis (bone fusion) could include a surgical 'screwing together' of two bones...
include borderline to mild intellectual disability, infertility, radioulnar synostosis (the fusion of the long bones in the forearm), and in some cases tall...
lip with or without a cleft palate, webbed neck, short neck, radioulnar synostosis, spina bifida, and hydrocephalus. Alcohol can also harm the fertility...
Global Information