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ringbone,bony outgrowth on the front and sides of the pastern bones of a horse's foot, resulting from inflammation or faulty conformation of the bones. The outgrowths increase with sprains and other injuries. Ringbone often produces lameness and is difficult to remedy. It may be controlled by keeping the feet of young animals in proper balance by correct trimming. In cases where swelling above the top edge of the hoof wall has developed and lameness is marked, the sensory nerves may have to be cut.
a defect of the forelegs and hindlegs of horses; a bony growth in the area of the pastern and coffin joints. Ringbone shows up externally as a thickening in the leg in the area of the coronet and sometimes as lameness. Its causes include weak constitution, underdeveloped bones, rickets, incorrect leg conformation, excessively hard work, and poor raising and handling. A predisposition to ringbone can be passed on genetically.