Abscesses can be the result of shallow infections through the hoof capsule where infection is trapped between the horn and the corium. The buildup of pus between the corium and the horn results in increased pressure in the foot, thereby causing pain and spreadingf infection. along the line of least resistance. Deeper penetrating abscesses are likely more serious. Infections can reach the deep flexor tendon, navicular bursa, navicular bone and possibly the distal interphalangeal joint.