Klippel-Feil syndrome is a rare, congenital malformation syndrome of the cervical spine. The main feature of Klippel-Feil syndrome is fusion of two or more cervical vertebral bodies. The fusion may range from the vertebral bodies to the entire vertebrae, including the posterior elements.
Epidemiology
The incidence of Klippel-Feil syndrome is unknown because it is rare and many patients are asymptomatic[^1].
Etiology
Klippel-Feil syndrome results from abnormal segmentation of the cervical somites between the 3rd and 8th weeks of development[^1].
Imaging features
Fusion of two or more cervical Vertebral body.
The involved vertebral bodies are flattened, and the associated intervertebral disc spaces are absent or hypoplastic.
Hemivertebrae may occur.
Neural foramina are smaller in diameter and oval.