Klippel-Feil Syndrome

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Abstract
The skeletal anomalies of the Klippel-Feil syndrome are present also in the adult with syringomyelia,1in the adolescent with diastematomyelia,2and in the infant with myelomeningocele.1These anomalies, believed due to improper segmentation of the mesodermal somites in embryonal life,2consist of varying degrees and combinations of dilatation, bifid states, fusion, shortening, and curvature of the craniovertebral column, with associated deformities of the rib cage and extremities. Within the lumen of the distended craniovertebral column, the central nervous system also exhibits varying degrees of distention of its lumen (hydrocephalus and hydromyelia).1,3 Hypothesis This occurrence of a distended tube of neural tissue within a distended tube of bone suggests cause and effect, namely, that overdistention of the neural tube (hydrocephalus and hydromyelia or "hydrocephalomyelia") in embryonal life has resulted in distortion of the encompassing sclerotomes, which then give rise to distorted bones—that in the individual case,

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