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Craniopagus twins are conjoined twins who are fused at the cranium. [1] The union may occur on any portion of the cranium, but does not primarily involve either the face or the foramen magnum; the two brains are usually separate, but they may share some brain tissue.
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.
Later in the child's life, these bones will fuse together in a natural process. A protein called noggin is responsible for the delay in an infant's skull fusion. [7] During labour and birth, the infant's skull changes shape to fit through the birth canal, sometimes causing the child to be born with a misshapen or elongated head. It will usually ...
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.
His skull remains in the collection of the University of Glasgow Hunterian. [6] [7] On December 10, 2003, Rebeca Martínez was born in the Dominican Republic. She was the first baby born with the condition to undergo an operation to remove the second head. She died on February 7, 2004, after an 11-hour operation. [8]
The treatment of bilateral coronal synostosis shows a high degree of overlap with treatment of unilateral coronal synostosis; in both surgical interventions is the forward advancement of the supraorbital rim together with the frontal bones is an important part of the procedure.
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Infants conjoined this way are sometimes called "two-headed babies" in popular media. [2] The condition is also called parapagus dicephalus. [1] If carried to term, most dicephalic twins are stillborn, or die soon after birth. [3] A small number are known to have survived to adulthood. [3]