CT scan showing fused cervical vertebrae and Sprengel's deformity (arrow), as seen in<unk>  KFS is associated with many other abnormalities of the body, hence thorough evaluation of all patients with fused cervical vertebrae at birth is required. Furthermore, it is unclear whether KFS is a unique disease, or if it is one part of a spectrum of congenital spinal deformities. KFS is usually diagnosed after birth. The most common signs of the disorder are restricted mobility of the neck and upper spine and a shortened neck with the appearance of a low hairline at the back of the head. Associated abnormalities may include: * Scoliosis (sideways curvature of the spine) * Spina bifida * Problems with the kidneys and the ribs * Cleft palate * Dental problems (delayed dentition, cavities, missing teeth) * Respiratory problems * Heart defects * Short stature * Duane syndrome * Srb's anomaly * Sprengel's deformity The disorder also may be associated with abnormalities of the head and face, skeleton, sex organs, muscles, brain and spinal cord, arms, legs and fingers.
Klippel–Feil syndrome
Srb's anomaly
Treacher Collins syndrome
Iniencephaly
Klippel–Trénaunay syndrome
Pelger–Huët anomaly
Laurence–Moon syndrome
Langer–Giedion syndrome