- Torticollis Due to Bony Anomalies: -
Klippel feil syndrome - atlantoociipital synostosis - basilar impression - odontoid anamalies - aplasia - hypoplasia -
Os Odontoideum - occipital vertebrae - asymmetry of occipital condyles (hypoplasia) - absent
C1 facet (unilateral) - fibrodysplasia ossificans -
atlantoaxial rotary displacement -
atlantorotatory fixation 
