What is (are) Wildervanck syndrome ?
Wildervanck syndrome is a condition that occurs almost exclusively in females and affects the bones in the neck, the eyes, and the ears.  It is characterized by Klippel-Feil anomaly (in which the bones of the neck fuse together), Duane syndrome (an eye movement disorder that is present from birth), and hearing loss.   The cause of Wildervanck syndrome is unknown.  In most cases, affected individuals have no family history of the condition.