This horse trod on a Swiss Army knife and it went in along the side of his frog. This wound needs to be regularly dressed and also needs to be protected from any dirt getting in which could lead to infection. In this instance you would need to make a hospital plate that can be removed for re-dressing. A bar shoe has been used to give a 360 degree surface to fit the plate to. Also then all the inside edges of the shoe can be sealed with Impression Material to stop dirt from getting in.