S99.13 Salter-Harris Type III physeal fracture of metatarsal

Name of the Condition

• Salter-Harris Type III physeal fracture of metatarsal

Summary

This condition involves a Salter-Harris Type III fracture affecting the growth plate (physis) of a metatarsal bone in the foot. Type III fractures are characterized by a fracture line that extends through the physis and into the epiphysis, potentially disrupting the joint surface. 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 extent of epiphyseal involvement.

Treatment Options

• Immobilization with a cast or brace
• Surgical intervention in cases of significant displacement or joint involvement
• Physical therapy to restore mobility and strength

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture and timely treatment. Regular follow-up is essential to monitor healing and growth plate function. Long-term outcomes may include potential growth disturbances or joint issues if not properly managed.

Complications

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

Lifestyle & Prevention

• Use appropriate protective gear during sports or high-impact activities.
• Maintain strength and flexibility in the foot and ankle.
• Avoid activities that place excessive stress on the metatarsals until cleared by a healthcare provider.

When to Seek Professional Help

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

Tips for Medical Coders

Document the specific Salter-Harris Type III 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 fracture characteristics.