S82.032 Displaced transverse fracture of left patella

Name of the Condition

• Displaced transverse fracture of left patella

Summary

This condition involves a horizontal break across the left kneecap (patella), a triangular bone that protects the knee joint. The fracture line runs perpendicular to the bone’s long axis, and the bone fragments are displaced from their normal alignment. Displacement indicates the fragments have shifted, which may affect joint stability and require specific treatment.

Causes

Direct trauma to the knee, such as a fall onto the kneecap, a blow from an object, or a forceful contraction of the quadriceps muscle. High-impact injuries, like those from sports 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 left 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 cast or brace, followed by physical therapy to restore strength and mobility.
• Surgical intervention: Internal fixation (e.g., screws or wires) to realign and stabilize the bone fragments, often required for displaced fractures.

Prognosis and Follow-Up

Most patients recover well with appropriate treatment, though recovery time varies. Follow-up appointments monitor healing, alignment, and functional recovery. Physical therapy is often necessary to regain full knee function.

Complications

• Nonunion or malunion of the fracture.
• Post-traumatic arthritis due to joint damage.
• Chronic pain or stiffness.
• Infection (if surgery is performed).

Lifestyle & Prevention

• Use protective gear during high-risk activities.
• Maintain bone health through diet and exercise.
• Avoid falls by using assistive devices if needed.

When to Seek Professional Help

Seek immediate care if you experience severe knee pain, swelling, or inability to bear weight after an injury. Prompt evaluation is important to prevent complications.

Tips for Medical Coders

Document the laterality (left) and displacement status clearly. Ensure clinical notes specify the fracture type (transverse) and displacement to support accurate coding.