I got kicked by a horse in the shin about 2 years ago. It made a little hole in my shin where i could see muscle and it even made a little hole down in the muscle. Now if i have a really long day with alot of standing or walking my shin will start to ache really bad and the pain radiates up to my knee. The other day i was walking and it felt like i was being stabed in my shin and it made me lip bad every time i took a step but then it complety went away after afew steps. I was woundering if this could be a musle problem or more of a bone problem?