Preschooler who developed torticollis after watching a video on their tablet with their neck flexed for 8 hours without moving

CT of atlanto-axial rotatory subluxation
3D CT without contrast of the cervical spine shows the C1 vertebral body rotated to the left approximately 30 degrees in relation to the C2 vertebral body.

The diagnosis was atlanto-axial rotatory subluxation due to muscle spasm.