Horses are safer than motorbikes; a lot safer - my sister used to do a lot of horse shows; later in life she became a handler of horses and attended the olympics...
That wound is pretty nasty will take at least a year to heal - though it will mostly be visible - i had a similar but not as bad wound and it was draining 6 months later. It stopped hurting after a couple of weeks but hte actual soft tissue damage was quite extensive.
I'd give whoever saddled that horse a good kick even if she is only 15 years old. I don't blame the horse one bit though one never knows how a horse will react in that situation.
Sorry it happened to you but hindsight wont' magically allow you to re-live the incident. In truth i haven't fallen off a horse since i was 16 or so; the horse brushed an electric fence and started bucking - it wasn't much of a fall just sort of a soft roll on the ground - get back up and get back on sort of thing so i don't want to make much of a deal of it.
In truth your damage could have been a lot worse and you could have lsot the leg so in a very crude sense you were lucky. Anyway good luck with a fast healing and keep it bandaged for a couple of weeks with daily change in dressing.
(but he was one of the sweetest bulls in the world)
