S82.02 Longitudinal fracture of patella

Name of the Condition

• Longitudinal fracture of patella

Summary

A longitudinal fracture of the patella is a break in the kneecap that runs vertically along its length. This type of fracture may involve partial or complete separation of the bone, depending on the force of the injury. The severity can vary, with some fractures remaining nondisplaced while others may shift out of alignment.

Causes

Direct trauma to the knee, such as a fall onto the kneecap, a forceful blow, or a sudden contraction of the quadriceps muscle. High-impact events, like sports injuries or motor vehicle accidents, are common triggers.

Risk Factors

• Participation in activities with a high risk of knee injury, such as contact sports or skiing.
• Osteoporosis or other bone-weakening conditions.
• Previous knee injuries or surgeries.
• Advanced age, which may reduce bone density.

Symptoms

• Sudden, severe pain in the knee.
• Swelling and bruising around the kneecap.
• Inability to straighten the knee or bear weight.
• Visible deformity or a gap in the kneecap area.
• A "popping" sensation at the time of injury.

Diagnosis

A physical examination to assess knee movement, swelling, and tenderness. Imaging studies, typically X-rays, to confirm the fracture and evaluate bone alignment. In some cases, a CT scan may be used to assess complex fractures or displacement.

Treatment Options

• Conservative management: Immobilization with a brace or cast to allow healing.
• Surgery: Required for displaced fractures to realign and stabilize the bone using screws, wires, or pins.
• Physical therapy: To restore strength and mobility after healing.

Prognosis and Follow-Up

Most longitudinal patella fractures heal well with appropriate treatment. Recovery time depends on fracture severity and treatment type, typically ranging from several weeks to months. Follow-up appointments monitor healing and functional recovery.

Complications

• Nonunion (failure to heal properly).
• Malunion (healing in an incorrect position).
• Arthritis or chronic knee pain.
• Infection (if surgery is performed).

Lifestyle & Prevention

• Use protective gear during high-risk activities.
• Maintain bone health through diet and exercise.
• Avoid sudden, forceful movements that strain the knee.

When to Seek Professional Help

Seek immediate medical attention if you experience severe knee pain, swelling, or inability to bear weight after an injury. Prompt evaluation is crucial for proper diagnosis and treatment.

Tips for Medical Coders

Document the fracture type (e.g., displaced or nondisplaced) and any associated injuries. Include details about the mechanism of injury and treatment provided to support accurate coding. Ensure alignment with clinical documentation for specificity.