If you own horses, at one time or another you have probably had to deal with splints. Splints are the bony looking growth causing a bump or blemish on your horse’s leg. Splints can form on any leg but most commonly occur on the front legs as they bare the bulk of the horse’s weight. At first they can be warm, tender and painful, but usually after a period of rest they cool down, harden up, and the horse can go back to work.