S82.122N Displaced fracture of lateral condyle of left tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

Displaced fracture of lateral condyle of left tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Summary

This condition involves a displaced fracture of the lateral condyle of the left tibia, a bony prominence on the outer side of the upper tibia that contributes to knee joint stability. The fracture is open (type IIIA, IIIB, or IIIC), meaning the skin is breached with significant soft tissue damage, and it is a subsequent encounter for treatment due to nonunion, where the bone has failed to heal properly after an initial injury.

Causes

Traumatic injury to the knee, such as falls, sports-related impacts, or motor vehicle accidents, is the primary cause. Direct force to the lateral knee or twisting injuries can lead to this fracture, resulting in both bone displacement and skin penetration. Nonunion may occur due to inadequate initial treatment, poor blood supply, infection, or excessive movement at the fracture site.

Risk Factors

• Participation in high-impact or contact sports.
• Osteoporosis or other bone-weakening conditions.
• Previous knee injuries or surgeries.
• Advanced age, which may reduce bone density.
• Poor initial fracture management or delayed treatment.

Symptoms

• Persistent pain, swelling, and tenderness localized to the lateral knee.
• Difficulty bearing weight on the affected leg.
• Visible deformity or misalignment.
• Bruising or discoloration around the injury site.
• Open wound at the fracture site (type IIIA, IIIB, or IIIC open fracture).
• Possible signs of infection, such as redness, warmth, or drainage.

Diagnosis

Physical examination to assess pain, swelling, joint stability, and signs of infection. Imaging tests, such as X-rays or CT scans, to evaluate fracture type, displacement, and nonunion. Laboratory tests may be used to check for infection or assess bone healing.

Treatment Options

• Surgical intervention to realign and stabilize the fracture, often with bone grafting to promote healing.
• Antibiotics or other treatments to address infection, if present.
• Immobilization with a cast or brace to protect the fracture site.
• Physical therapy to restore function 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, and recovery can be prolonged. Regular follow-up with imaging and clinical assessments is necessary to monitor healing and address complications.

Complications

• Infection at the fracture site.
• Chronic pain or instability in the knee joint.
• Delayed or failed bone healing (nonunion).
• Nerve or blood vessel damage.
• Long-term joint dysfunction or arthritis.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Follow prescribed rehabilitation to strengthen the knee and prevent re-injury.
• Maintain bone health through proper nutrition and exercise.
• Use protective gear during sports or activities with fall risks.

When to Seek Professional Help

Seek immediate medical attention for severe pain, swelling, visible deformity, or signs of infection (e.g., fever, redness, drainage). Follow up with a healthcare provider if symptoms worsen or do not improve with treatment.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC), nonunion status, and subsequent encounter details. Ensure clinical notes specify the open fracture classification and evidence of nonunion to support accurate coding.