S99.121 Salter-Harris Type II physeal fracture of right metatarsal

Name of the Condition

• Salter-Harris Type II physeal fracture of right metatarsal

Summary

This condition involves a Salter-Harris Type II fracture affecting the growth plate (physis) of the right metatarsal bone. Type II fractures are characterized by a separation of the growth plate with a metaphyseal fragment, involving both the physis and adjacent metaphysis. These injuries typically occur in children or adolescents, where the growth plate is still active, and require careful evaluation 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 fragment.

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 function. Most cases heal without long-term issues if properly managed.

Complications

• Growth plate disturbance leading to limb length discrepancy
• Malunion or nonunion of the fracture
• Chronic pain or stiffness in the foot

Lifestyle & Prevention

• Use appropriate footwear during sports or high-impact activities.
• Avoid activities that place excessive stress on the feet.
• Strengthen foot and ankle muscles to improve stability.

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 right metatarsal involvement. Ensure clinical notes specify the fracture type and affected bone to support accurate coding.