A coffin bone fracture is a break in the distal phalanx inside the hoof capsule. These fractures can be articular (involving the coffin joint) or non-articular (such as wing fractures) and are usually caused by trauma or severe concussion. They often result in acute, severe lameness and require prompt veterinary evaluation. ## What it is The [coffin bone](/anatomy/coffin-bone-distal-phalanx-p3) is a critical weight-bearing structure enclosed within the rigid hoof capsule. Fractures most commonly occur as wing fractures (non-articular) or through the solar margin. Articular fractures that enter the coffin joint carry a more guarded prognosis because they can lead to osteoarthritis. The enclosed nature of the hoof makes these injuries particularly painful due to pressure and limited ability for swelling to occur. Coffin bone fractures are often traumatic, resulting from missteps, kicks, or high-impact landings, but they can also occur in horses with pre-existing bone weakening from chronic [laminitis](/conditions/laminitis) or [pedal osteitis](/conditions/pedal-osteitis). ## Signs and symptoms - Sudden onset of severe lameness, often non-weight-bearing - Strong bounding digital pulse - Increased heat in the hoof - Marked pain response to hoof testers over the affected area - Shifting weight or holding the limb off the ground - In some cases, swelling at the coronary band if the fracture is articular or complicated ## Causes and risk factors Most coffin bone fractures result from acute trauma or severe concussive forces. Risk factors include working on hard or uneven ground, conformational issues that increase stress on the foot, and pre-existing conditions that weaken the bone such as chronic laminitis. Horses in high-speed or jumping disciplines have a higher incidence of traumatic fractures. ## How it is diagnosed Diagnosis is confirmed with radiographs. Multiple views are usually required because the hoof capsule can obscure fracture lines. In some cases, especially with non-displaced or hairline fractures, repeat radiographs after several days or advanced imaging (CT) may be needed. Nerve blocks help localize the pain to the foot. ## Treatment and management Treatment depends on the type and location of the fracture. Non-articular wing fractures are often managed conservatively with stall rest, supportive shoeing (often with a bar shoe and heel elevation), and pain management. Articular fractures may require more aggressive treatment and carry a higher risk of long-term joint problems. Healing typically takes several months, and prognosis is better for non-articular fractures. ## When to call the vet Call your veterinarian immediately for any sudden, severe lameness. Coffin bone fractures are serious injuries that require prompt diagnosis and appropriate management to optimize healing and minimize complications such as infection or osteoarthritis. ## Prevention Prevention focuses on minimizing trauma through good footing, appropriate conditioning, and careful farriery. Prompt treatment of any underlying foot conditions that weaken the coffin bone (such as laminitis) can also reduce risk. ## Frequently asked questions **How long does it take for a coffin bone fracture to heal?** Most fractures take 3 to 6 months or longer to heal, depending on the type and the horse's age and overall health. **Can a horse return to work after a coffin bone fracture?** Many horses return to some level of work, especially with non-articular fractures. Articular fractures have a more guarded prognosis for high-level performance due to the risk of osteoarthritis. **Is surgery needed for coffin bone fractures?** Most are managed conservatively. Surgery is occasionally considered for certain articular or displaced fractures. This information is for educational purposes only. Always consult with a licensed veterinarian for diagnosis and treatment of your horse.
Sudden onset of severe lameness, often non-weight-bearing; strong bounding digital pulse; increased heat in the hoof; marked pain response to hoof testers over the affected area; shifting weight or holding the limb off the ground; in some cases, swelling at the coronary band if the fracture is articular or complicated
A coffin bone fracture is a break in the distal phalanx inside the hoof capsule. These fractures can be articular (involving the coffin joint) or non-articular (such as wing fractures) and are usually caused by trauma or severe concussion. They often result in acute, severe lameness and require prompt veterinary evaluation. ## What it is The [coffin bone](/anatomy/coffin-bone-distal-phalanx-p3) is a critical weight-bearing structure enclosed within the rigid hoof capsule. Fractures most commonly occur as wing fractures (non-articular) or through the solar margin. Articular fractures that enter the coffin joint carry a more guarded prognosis because they can lead to osteoarthritis. The enclosed nature of the hoof makes these injuries particularly painful due to pressure and limited ability for swelling to occur. Coffin bone fractures are often traumatic, resulting from missteps, kicks, or high-impact landings, but they can also occur in horses with pre-existing bone weakening from chronic [laminitis](/conditions/laminitis) or [pedal osteitis](/conditions/pedal-osteitis). ## Signs and symptoms - Sudden onset of severe lameness, often non-weight-bearing - Strong bounding digital pulse - Increased heat in the hoof - Marked pain response to hoof testers over the affected area - Shifting weight or holding the limb off the ground - In some cases, swelling at the coronary band if the fracture is articular or complicated ## Causes and risk factors Most coffin bone fractures result from acute trauma or severe concussive forces. Risk factors include working on hard or uneven ground, conformational issues that increase stress on the foot, and pre-existing conditions that weaken the bone such as chronic laminitis. Horses in high-speed or jumping disciplines have a higher incidence of traumatic fractures. ## How it is diagnosed Diagnosis is confirmed with radiographs. Multiple views are usually required because the hoof capsule can obscure fracture lines. In some cases, especially with non-displaced or hairline fractures, repeat radiographs after several days or advanced imaging (CT) may be needed. Nerve blocks help localize the pain to the foot. ## Treatment and management Treatment depends on the type and location of the fracture. Non-articular wing fractures are often managed conservatively with stall rest, supportive shoeing (often with a bar shoe and heel elevation), and pain management. Articular fractures may require more aggressive treatment and carry a higher risk of long-term joint problems. Healing typically takes several months, and prognosis is better for non-articular fractures. ## When to call the vet Call your veterinarian immediately for any sudden, severe lameness. Coffin bone fractures are serious injuries that require prompt diagnosis and appropriate management to optimize healing and minimize complications such as infection or osteoarthritis. ## Prevention Prevention focuses on minimizing trauma through good footing, appropriate conditioning, and careful farriery. Prompt treatment of any underlying foot conditions that weaken the coffin bone (such as laminitis) can also reduce risk. ## Frequently asked questions **How long does it take for a coffin bone fracture to heal?** Most fractures take 3 to 6 months or longer to heal, depending on the type and the horse's age and overall health. **Can a horse return to work after a coffin bone fracture?** Many horses return to some level of work, especially with non-articular fractures. Articular fractures have a more guarded prognosis for high-level performance due to the risk of osteoarthritis. **Is surgery needed for coffin bone fractures?** Most are managed conservatively. Surgery is occasionally considered for certain articular or displaced fractures. This information is for educational purposes only. Always consult with a licensed veterinarian for diagnosis and treatment of your horse.
Sudden onset of severe lameness, often non-weight-bearing; strong bounding digital pulse; increased heat in the hoof; marked pain response to hoof testers over the affected area; shifting weight or holding the limb off the ground; in some cases, swelling at the coronary band if the fracture is articular or complicated