Splints

I have a 6 year old thoroughbred who has recently developed a splint. I don't know how it occurred but it is not causing her any pain! Is there anything I should do about it? Or any ideas how it occurred? Please help! Thanks

I would like to see a picture of both of her front legs (from the front) that show her from the knees down.

Some splints are the result of conformation, others are from too much work and others can be influenced by shoeing/trimming.

Soooo, pictures would be nice.