equine evolution

Question
can you help i am looking for the following answer to this question.which of our fingers is equivalent to the horses chestnut. thankyou

Answer
Linda,

None of our fingers is equivalent to a the chestnut on a horse's leg.  The chestnut is actually a gland that is involved with bone growth and development.  It is very active in young horses and becomes mostly inactive once the horse attains its full growth in the leg bones.  

The horse walks on a highly modified set of bones equivalent to the longest finger on your hand.  The other digits have recessed over time with evolution and the vestigial remains are the splint bones, the 2nd and 4th metacarpal bones.  

Lyn