What term is used to describe an abnormally hollowed back of a horse?

The term that describes an abnormally hollowed back of a horse is often referred to as "sway back" or lordosis. This condition is characterized by a noticeable dip in the horse's back, typically due to weak or stretched ligaments and muscles. It can affect the horse's overall conformation and may lead to performance issues or discomfort while riding.

Sway back is particularly notable in certain age groups, especially older horses, as it may develop over time due to factors such as genetics, improper saddle fit, or lack of proper exercise. Understanding this term is important for horse owners and caretakers, as it impacts decisions regarding training, care, and the type of equipment used.

The other terms relate to different physiological characteristics of horses. For instance, high withers refers to a prominent area between the horse's neck and back, while a hunter's bump is an abnormality characterized by a prominent lump at the top of the croup. A flat back describes a horse's back that lacks a significant curve but does not imply the same health or mobility concerns associated with a sway back.