The metatarsal bones are typically five long bones at the distal end of the pelvic limb. They are sometimes called pelvic metapodium. The skeleton of the metatarsus (and phalanges) closely ressembles those of the forelimb (metatarsals are longer and slender with a stronger cortex, and in horses, the cannon bone (metatarsal III) is circular (oval in thoracic limb)).
The metatarsal bones are numerated in a mediolateral sequence from Mc I to McV.
The metacarpal bones have all the same segments:
The number of metatarsal bones may be reduced. For example, in the horse, only the third ray (cannon bone) is functional, with second and fourth metacarpal bones (splint bones) bearing no weight.