The foot abscess is a common cause of lameness and a circumstance that many horse owners will encounter at some point in time. In this article, veterinary podiatrist Luke Wells-Smith describes how they happen, the clinical signs, different types of foot infections and areas they can affect, as well as detailing the current treatment and management strategies. What is a foot abscess? A foot abscess is the accumulation of inflammatory fluid and cells within the structures of the foot. There are two types of abscess - sterile and septic.