Pedal Osteitis in Horses

Sometimes referred to as inflamed pedal bone, pedal osteitis can either be non-septic or septic. Non-septic pedal osteitis is generally associated with chronic sole bruising. Pedal osteitis is a radiographic finding of demineralization of the solar margin of the distal phalanx, commonly associated with widening of vascular channels near the solar margin. Although the term is usually used to describe changes in the dorsal distal (toe) solar margin, it can be used to describe bone resorption of any aspect of the solar margin of the distal phalanx. The bony resorption usually occurs due to chronic or repeated pressure and/or inflammation of the affected region.

Resorption in the toe region commonly occurs in chronic laminitis cases in which displacement of the distal phalanx results in inadequate sole depth between the ground surface and solar margin of the distal phalanx, resulting in chronic trauma and inflammation of that region of the phalanx and surrounding soft tissue.