What is a characteristic of knock-kneed conformation?

Knock-kneed conformation is characterized by a condition in which the horse’s legs curve inward at the knees while the feet or lower legs point outward. This inward deviation between the knees gives the appearance of the horse having a narrow chest. The condition can lead to issues in movement, as the horse may have difficulty with balance and may experience strain on certain joints due to the misalignment.

In contrast, the other descriptions do not accurately describe knock-kneed conformation. A wide chest that deviates inwards or outwards suggests a different type of leg alignment than what is seen in knock-kneed horses. Likewise, a normal chest with straight legs does not fit the definition, as knock-kneed horses have a specific leg alignment that deviates from the norm. Thus, the choice reflecting the narrow chest and inward deviation accurately captures the essence of this conformation issue.