What is this leg injury? *PICTURES*?

it looks like maybe your horse got cast, or maybe kicked something. my mare did the same thing about a year ago and it was basically just a bone bruise, but it could also be a fracture. does it feel like all the tendons are still straight and thin? or do they feel lumpy? if they feel lumpy and thick it might be more serious. also if your horse is limping like his/her leg is broken i would call a vet. otherwise try a hand walk and some bute. good luck!