Latero‐lateral radiograph of the neck of an 18‐month‐old Dutch Warmblood horse. Equine Disc Width Index (EDWI) = (D+E+F)/(A+B+C) (white lines at vertebral body and black lines at intervertebral disc space). Normalized dorso‐ventral EDWI = (((D/B)/(F/B))/mean DHI) with mean EDWI = ((D/B)+(E/B)+(F/B)/3)).The vertebral alignment angle (VAA) at C4‐C5 is indicated by the white arrows.kVp 75, mAs 30, bone algorithm