S99.14 Salter-Harris Type IV physeal fracture of metatarsal

Name of the Condition

• Salter-Harris Type IV physeal fracture of metatarsal

Summary

This condition involves a Salter-Harris Type IV fracture affecting the growth plate (physis) of a metatarsal bone in the foot. Type IV fractures are characterized by a fracture line that extends through the metaphysis, physis, and epiphysis, involving all three regions of the developing bone. These injuries typically occur in children or adolescents, where the growth plate is still active, and require careful assessment to ensure proper healing and prevent long-term complications.

Causes

Direct trauma or injury to the foot, such as falls, sports-related impacts, or accidents, can disrupt the growth plate. Sudden force applied to the metatarsals, including twisting or direct blows, may lead to this type of fracture. The injury often results from high-energy events that stress the developing bone structure.

Risk Factors

• Age: Children and adolescents, as their growth plates are still developing and more susceptible to injury.
• High-impact activities: Participation in sports like running, jumping, or contact sports.
• Previous injuries: Prior damage to the metatarsals or surrounding structures may increase vulnerability.

Symptoms

• Pain and swelling localized to the metatarsal area.
• Difficulty bearing weight or walking on the affected foot.
• Limited range of motion in the toes or midfoot.
• Visible bruising or deformity in severe cases.

Diagnosis

Physical examination to assess pain, swelling, and functional limitations. Imaging tests, such as X-rays or MRI, to evaluate the fracture and growth plate involvement, including the extent of the fracture line through the metaphysis, physis, and epiphysis.

Treatment Options

• Immobilization with a cast or brace
• Surgical intervention in cases of significant displacement or instability
• Pain management and activity modification

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture and the success of treatment. Close follow-up is necessary to monitor healing and growth plate function. Long-term complications may include growth disturbances or joint issues if the fracture is not properly aligned.

Complications

• Growth plate damage leading to limb length discrepancy or angular deformity
• Joint stiffness or arthritis
• Nonunion or malunion of the fracture

Lifestyle & Prevention

• Use appropriate protective gear during sports or high-impact activities.
• Avoid activities that place excessive stress on the feet until cleared by a healthcare provider.
• Maintain overall bone health through proper nutrition and exercise.

When to Seek Professional Help

Seek immediate medical attention if there is severe pain, inability to bear weight, visible deformity, or signs of infection (e.g., redness, warmth, fever) after an injury to the foot.

Tips for Medical Coders

Document the specific Salter-Harris Type IV classification and the affected metatarsal bone. Include details about the fracture's severity, displacement, and any associated injuries to ensure accurate coding. Note the presence of growth plate involvement and any surgical or conservative treatment provided.