Effect of Congenital C4-5 Synostosis on Adjacent Mobile Segments: Radiographic Assessment.

Study Design: Prospective case series.

Purpose: To assess the corporal morphology of the fused body and adjacent segment conditions.

Overview Of Literature: It is known that two fused vertebral bodies take the similar shape of the single body with inwaisting, with or without caudal flaring of the fused body, and that the fused body can cause the fusion disease at the adjacent segment that can be a risk factor for potential neurological compromise.