After having condition scored over a thousand endurance horses, I respectfully disagree with Dr. Henneke's opinion. Spinous processes, along the ribs, topline, point of hip and point of buttock all project prominently, with an obvious ridge down the back. Individual vertebrae may be identifiable. Spinous processes, ribs, topline, point of hip and buttock are prominent. Noticeable space between inner buttocks.
Animal is emaciated.
Tailhead is prominent. Slight fat cover over ribs, but still easily discernible. Spinous processes, point of hip and point of buttock are rounded, but easily discernible. Twist is filled in, but without noticeable deposition of fatty tissue. Ribs are faintly discernible.