Quittor is necrosis and infection of the lateral and collateral cartilage of the foot. When ossification (bone remodeling) of these same cartilages occur, it is referred to as sidebone
. Quittor is characterized by a chronic purulent (sometimes intermittent) discharge in the area at or just above the coronary band. One or more sinus tracts may extend from the infected deep tissues of the cartilage through the skin to the coronary band. Quittor can be caused by trauma to the foot over the coronary band or pastern region of the cartilage.
Treatment of quittor requires surgical removal of the dead and infected tissue, antibiotics, and supportive care. Maggot therapy my also be helpful for aiding in the removal of the dead and infected tissue.