S99.12 Salter-Harris Type II physeal fracture of metatarsal

Name of the Condition

• Salter-Harris Type II physeal fracture of metatarsal

Summary

This condition involves a Salter-Harris Type II fracture affecting the growth plate (physis) of a metatarsal bone in the foot. Type II fractures are characterized by a separation of the growth plate with a fracture extending into the metaphysis. 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 metaphyseal component.

Treatment Options

• Immobilization with a cast or brace
• Surgical intervention for displaced fractures
• Pain management and activity modification

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture and adherence to treatment. Regular follow-up with imaging may be necessary to monitor healing and growth plate integrity. Long-term outcomes are generally favorable with proper management, though complications can occur.

Complications

• Growth plate disturbance leading to limb length discrepancy
• Premature closure of the growth plate
• Chronic pain or stiffness
• Malunion or nonunion of the fracture

Lifestyle & Prevention

• Use appropriate protective footwear during sports or high-risk activities.
• Avoid overexertion or repetitive stress on the feet.
• Maintain bone health with proper nutrition and exercise.

When to Seek Professional Help

Seek immediate medical attention for severe pain, inability to bear weight, visible deformity, or signs of infection (e.g., redness, fever).

Tips for Medical Coders

Document the specific Salter-Harris Type II classification and metatarsal involvement. Ensure clinical notes support the fracture type and any associated complications. Verify that the code aligns with the documented anatomical location and injury details.