Definition

Noun: - The greatly developed bone between the knee or hock and the fetlock in the leg of a hoofed mammal: In horses and other ungulates, the cannon bone is a single, strong, long bone in the lower leg. In the front leg, it is the metacarpal bone; in the hind leg, it is the metatarsal bone. It is a key structural support for running.

Usage

The term "cannon bone" is used specifically in veterinary science, zoology, and equestrian contexts to describe a distinct anatomical feature of certain animals. - It is a countable noun (e.g., the cannon bone, both cannon bones). - It is typically modified by "front" or "hind" to specify its location.

Examples

• The horse sustained a fracture in its cannon bone, ending its racing career.
• A thorough examination revealed a small crack in the left front cannon bone.
• The strength and angle of the cannon bone are important factors in assessing a horse's conformation.

Advanced Usage

• "Cannon bone circumference": A common measurement taken on horses to assess bone density and overall sturdiness.
  • Breed standards often specify a minimum cannon bone circumference for stallions.

Variants and Related Words

• Metacarpal III (McIII): The specific anatomical name for the cannon bone in the front limb of a horse.
• Metatarsal III (MtIII): The specific anatomical name for the cannon bone in the hind limb of a horse.
• Splint bones: The small, vestigial metacarpal/metatarsal bones (II and IV) that run along the sides of the cannon bone.

Synonyms

• Shin bone (informal, in equestrian contexts): While not anatomically precise, this is sometimes used colloquially to refer to the cannon bone area.
• Metapodial bone: A more general zoological term for the long bone in the foot of ungulates, which includes the cannon bone.

Noun

1. greatly developed metatarsal or metacarpal bone in the shank or cannon part of the leg in hoofed mammals