S79.141S Salter-Harris Type IV physeal fracture of lower end of right femur, sequela

Name of the Condition

Salter-Harris Type IV physeal fracture of lower end of right femur, sequela

Summary

A Salter-Harris Type IV physeal fracture of the lower end of the right femur is an injury involving the growth plate (physis) at the distal femur, typically occurring in children or adolescents. This fracture disrupts the physis and involves a fracture through the metaphysis, physis, and epiphysis, as defined by the Salter-Harris classification system. The "sequela" designation indicates that this code is used for complications or conditions resulting from the initial fracture, such as chronic pain, growth disturbances, or joint instability that persist after the acute phase of healing.

Causes

Salter-Harris Type IV physeal fractures of the lower femur are usually caused by acute trauma, such as falls, sports-related injuries, or direct blows to the knee or thigh. The force transmitted across the growth plate can cause it to separate and fracture through multiple bone regions. In some cases, repetitive stress or overuse may contribute to the injury, particularly in active children or adolescents. The sequela arises from incomplete healing, malunion, or long-term damage to the growth plate or surrounding structures.

Risk Factors

• Age: Most common in children and adolescents, as growth plates are weaker than surrounding bone.
• Activity level: Participation in high-impact sports or activities with a risk of falls (e.g., gymnastics, soccer, skateboarding).
• Growth spurts: Periods of rapid growth may temporarily weaken the physis, increasing susceptibility to injury.
• Previous injury: A history of fractures or growth plate damage can predispose to long-term complications.

Symptoms

• Chronic pain or discomfort in the knee or thigh, especially during activity.
• Limited range of motion or stiffness in the affected joint.
• Visible deformity or limb length discrepancy due to growth plate damage.
• Swelling or tenderness at the fracture site, even after initial healing.
• Difficulty bearing weight or walking without pain.

Diagnosis

Diagnosis of a sequela from a Salter-Harris Type IV physeal fracture involves a thorough clinical evaluation, including a review of the patient’s medical history and prior injury. Imaging studies, such as X-rays or MRI, may be used to assess residual bone damage, growth plate integrity, or joint alignment. The provider will look for signs of malunion, growth arrest, or other complications that indicate the fracture has not fully healed or has caused long-term issues.

Treatment Options

Treatment depends on the severity of the sequela and may include physical therapy to improve mobility and strength, pain management, or surgical intervention to correct deformities or stabilize the joint. In cases of growth disturbance, procedures like epiphysiodesis (stopping growth in one area) or limb-lengthening may be considered. The goal is to alleviate symptoms and restore function while minimizing further damage to the growth plate or surrounding structures.

Prognosis and Follow-Up

Prognosis varies based on the extent of growth plate damage and the success of initial treatment. Some patients may experience permanent growth disturbances or joint problems, while others recover with minimal long-term effects. Regular follow-up with an orthopedic specialist is essential to monitor growth, joint function, and any developing complications. Imaging and clinical assessments help guide ongoing care and adjustments to treatment plans.

Complications

• Growth arrest or limb length discrepancy due to damage to the growth plate.
• Chronic joint instability or arthritis from improper healing.
• Persistent pain or functional limitations affecting daily activities.
• Increased risk of future fractures in the affected area.

Lifestyle & Prevention

• Avoid high-impact activities that could exacerbate joint or bone stress.
• Use protective gear during sports or activities with a fall risk.
• Maintain a healthy weight to reduce stress on the joints.
• Follow post-injury rehabilitation guidelines to optimize healing and function.

When to Seek Professional Help

Seek medical attention if you experience worsening pain, new swelling, or difficulty moving the affected limb, as these may indicate a new injury or complication. Regular follow-up with a healthcare provider is recommended for ongoing monitoring of growth and joint health, especially in children or adolescents with a history of growth plate fractures.

Tips for Medical Coders

Use this code for complications or conditions resulting from a Salter-Harris Type IV physeal fracture of the lower end of the right femur that persist after the acute healing phase. Document the specific sequela (e.g., growth disturbance, chronic pain) and confirm that the injury is no longer in the active treatment phase. Ensure the code aligns with the patient’s current clinical status and that prior fracture history is clearly noted in the medical record.