## Overview Splints are inflammation of the interosseous ligament and periosteum between the cannon bone and the small metacarpal (splint) bones, producing a bony swelling (exostosis). They are common in young horses and usually occur on the medial side. Lameness is present only while the splint is forming. Once the bone settles, most horses become sound unless the swelling interferes with the suspensory ligament. ## Causes Concussion, training stress in immature horses, conformation, or direct trauma. ## Diagnosis Palpation and radiographs to distinguish from fracture. ## Treatment Rest and anti-inflammatories. Intralesional corticosteroids are sometimes used. Surgery only if the exostosis impinges on the suspensory. ## Recovery and Prognosis Excellent. The bony lump usually remains but is not painful. ## Prevention Gradual training of young horses and balanced shoeing.
firm swelling on the medial cannon; lameness while forming; resolves once ossified; radiographic exostosis
## Overview Splints are inflammation of the interosseous ligament and periosteum between the cannon bone and the small metacarpal (splint) bones, producing a bony swelling (exostosis). They are common in young horses and usually occur on the medial side. Lameness is present only while the splint is forming. Once the bone settles, most horses become sound unless the swelling interferes with the suspensory ligament. ## Causes Concussion, training stress in immature horses, conformation, or direct trauma. ## Diagnosis Palpation and radiographs to distinguish from fracture. ## Treatment Rest and anti-inflammatories. Intralesional corticosteroids are sometimes used. Surgery only if the exostosis impinges on the suspensory. ## Recovery and Prognosis Excellent. The bony lump usually remains but is not painful. ## Prevention Gradual training of young horses and balanced shoeing.
firm swelling on the medial cannon; lameness while forming; resolves once ossified; radiographic exostosis