S72.432N Displaced fracture of medial condyle of left femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

• Displaced fracture of medial condyle of left femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Summary

This condition involves a displaced fracture of the medial condyle (the inner rounded projection) of the left femur at the knee joint, occurring during a subsequent encounter for an open fracture type IIIA, IIIB, or IIIC with nonunion. The fracture is displaced, meaning the bone fragments are not aligned, and the skin is breached (open fracture). Nonunion indicates the fracture has failed to heal properly. This injury affects knee stability and function, potentially leading to persistent pain, swelling, and impaired mobility.

Causes

High-impact trauma, such as falls, motor vehicle accidents, or direct blows to the knee. Sports injuries or physical altercations involving the thigh. Stress fractures from repetitive overuse or strenuous activity. Inadequate initial treatment or poor healing conditions may contribute to nonunion.

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.
• Poor blood supply to the fracture site.
• Infection or other complications from the initial injury.

Symptoms

• Severe, persistent pain localized to the inner knee or thigh.
• 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.
• Signs of infection, such as redness, warmth, or drainage (if open fracture present).

Diagnosis

Physical examination to assess pain, swelling, and limb alignment. Imaging studies, such as X-rays or CT scans, to confirm the fracture type, location, and nonunion status. Additional tests, like MRI, if soft tissue damage or subtle fractures are suspected. Laboratory tests to check for infection if an open fracture is present.

Treatment Options

Surgical intervention to realign and stabilize the fracture, often with internal fixation devices. Bone grafting may be used to promote healing in cases of nonunion. Antibiotics or wound care for open fractures to prevent or treat infection. Physical therapy to restore mobility and strength after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, presence of infection, and response to treatment. Nonunion may require additional interventions. Regular follow-up with imaging to monitor healing. Long-term rehabilitation may be necessary to regain full function.

Complications

Persistent pain or instability. Nonunion or malunion of the fracture. Infection, especially with open fractures. Nerve or blood vessel damage. Post-traumatic arthritis in the knee joint.

Lifestyle & Prevention

Avoid high-impact activities until cleared by a healthcare provider. Use protective gear during sports or high-risk activities. Maintain bone health through a balanced diet and regular exercise. Follow post-treatment instructions carefully to support healing.

When to Seek Professional Help

Severe or worsening pain, swelling, or deformity. Signs of infection, such as fever, redness, or drainage. Numbness, tingling, or weakness in the leg or foot. Inability to bear weight or move the knee.

Tips for Medical Coders

Document the laterality (left femur), fracture displacement, open fracture type (IIIA, IIIB, or IIIC), and nonunion status. Specify the encounter type (subsequent) and any associated complications. Ensure documentation supports the code assignment and aligns with clinical findings.