S72.452M Displaced supracondylar fracture without intracondylar extension of lower end of left femur, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Displaced supracondylar fracture without intracondylar extension of lower end of left femur, subsequent encounter for open fracture type I or II with nonunion

Summary

This condition involves a displaced fracture at the distal (lower) end of the left femur, specifically in the supracondylar region (above the condyles), without extension into the intracondylar area. The fracture is open (type I or II), meaning the skin is breached but the wound is limited, and it is a subsequent encounter for this injury with nonunion (failure of the bone to heal properly). Displacement indicates the bone fragments are misaligned, potentially affecting knee stability and function.

Causes

High-impact trauma, such as falls, motor vehicle accidents, or direct blows to the thigh. Sports injuries or physical altercations involving force to the knee or thigh. Open fractures may result from trauma that penetrates the skin, such as a fall onto a sharp object or a direct impact with a fractured bone fragment. Nonunion can occur due to inadequate immobilization, poor blood supply, infection, or severe initial trauma.

Risk Factors

• Advanced age, which may lead to decreased bone density.
• Osteoporosis or other bone-weakening conditions.
• Participation in high-risk activities or contact sports.
• Prior history of femur fractures or bone disorders.
• Open fractures are more likely with severe trauma or inadequate protective measures.
• Factors contributing to nonunion include smoking, diabetes, or poor nutritional status.

Symptoms

• Severe pain in the knee or thigh area.
• Swelling, bruising, or visible deformity around the knee.
• Inability to bear weight or move the knee joint properly.
• Possible numbness or tingling if nerves are involved.
• Persistent pain or instability indicating nonunion.

Diagnosis

Physical examination to assess pain, swelling, and deformity. Imaging studies, such as X-rays or CT scans, to confirm the fracture type, displacement, and nonunion. Evaluation of the open wound for type (I or II) and signs of infection. Assessment of blood flow and nerve function to rule out complications.

Treatment Options

Surgical intervention to realign and stabilize the fracture, often with internal fixation (plates, screws) or external fixation. Management of the open wound, including cleaning and possible debridement. Bone grafting or other procedures to promote healing in cases of nonunion. Physical therapy to restore mobility and strength once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, success of treatment, and resolution of nonunion. Follow-up imaging and clinical assessments to monitor healing. Long-term rehabilitation may be needed to regain full function. Complications like infection or persistent nonunion may require additional interventions.

Complications

• Infection of the open wound or surgical site.
• Nerve or vascular damage affecting limb function.
• Chronic pain or arthritis in the knee joint.
• Persistent nonunion requiring further surgery.
• Limited mobility or instability of the knee.

Lifestyle & Prevention

Avoid high-risk activities or use protective gear during sports. Maintain bone health through adequate nutrition (calcium, vitamin D) and exercise. Prompt treatment of initial fractures to reduce nonunion risk. Follow post-injury care instructions strictly to support healing.

When to Seek Professional Help

Severe or worsening pain, swelling, or deformity. Signs of infection (redness, pus, fever). Numbness, tingling, or loss of circulation in the leg. Inability to bear weight or move the knee. Persistent symptoms indicating nonunion or complications.

Tips for Medical Coders

Document the fracture location (left femur, supracondylar), displacement, absence of intracondylar extension, open fracture type (I or II), and nonunion. Specify "subsequent encounter" to indicate follow-up care. Include details on wound status, treatment provided, and any complications to support code assignment.